Marantz PM-KI-Pearl-Lite
Contents
1. 10 00 Hz 100 00 1000 00 10000 00 Graph 8 Tone control action referenced to OdB at 1kHz Marantz PM KI Pearl Lite 40 Australian hi fi Marantz PM KlI Pearl Lite Integrated Amplifier amplifier is operated at its rated output into 8O and 40 loads as it normally does so as ld expect However you can see that into 8QO loads in particular the Marantz PM KI Pearl Lite is very well behaved indeed The Marantz KI Pearl Lite Integrated Amplifier Power Output Channel Load Q 20Hz 20Hz 1kHz 1kHz 20kHz 20kHz watts dBW watts dBW watts dBW 1 80 99 100 20 0 104 20 2 19 9 second harmonic pokes its head just above i sti Las 17a sad ite the 100dB graticule 0 001 THD but 40 161 22 0 166 22 2 152 21 8 all other distortion components lie below 2 4Q 132 212 136 21 3 126 21 0 it indeed all except the third harmonic a6 144 21 6 204 23 0 Wo 224 which is at 104dB 0 0006 are more 5 20 144 216 171 223 158 219 than 110dB down 0 0003 THD The noise floor itself is mostly stuck around 130dB but at the extreme left of the graph it rises to 100dB which would be low frequency noise Performance into 4Q loads isn t Note Figures in the dBW column represent output level in decibels referred to one watt output Protection triggers at this output level Mute light flashes Auto reset when signal removed Marantz KI Pearl Lite Integrated Amplifier Test Results quite as good b2. Frequency response was flat and very extended stretching from 1 5Hz to 270kHz 3dB Within the audio band into a non inductive 8O load the Marantz returned a frequency response of 20Hz to 20kHz 0 04dB Tested into a reactive load simu lating a typical two way loudspeaker the dBFS 0 00 Newport Test Labs 20 00 4 40 00 60 00 4 80 00 4 100 00 120 00 H 140 00 i 0 00 Hz 4000 00 8000 00 12000 00 16000 00 20000 00 Graph 1 Total harmonic distortion THD at 1kHz referenced to 1 watt across an 8 ohm non inductive load Marantz PM KI Pearl Lite t t t t t t t t t i 0 00 Hz 4000 00 8000 00 12000 00 16000 00 20000 00 Graph 2 Total harmonic distortion THD at 1kHz referenced to 1 watt across a 4 ohm non inductive load Marantz PM KI Pearl Lite dBFS 0 00 4 22 2 po 2 2 o oo fen enna nena ee k 71 E etree 20 00 panna E E E E A E E E 40 00 EEA E E pitseeeteeed EE E toscasoesued E EEE TE 60 00 4 4 t heeren fonnneneeenedacennnneeecbenseeensned E E a E E persere oe eee ee re eet re 100 00 120 00 M 140 00 i i i 0 00 Hz 4000 00 8000 00 12000 00 16000 00 20000 00 Graph 3 Total harmonic distortion THD at 1kHz referenced to rated output 70 watts across an 8 ohm non inductive load Marantz PM KI Pearl Lite The Marantz Pearl L
3. ON TEST Marantz PM KI Pearl Lite INTEGRATED AMPLIFIER can almost hear the gasps of dismay when audiophiles take their first look at the Marantz PM KI Pearl Lite They ll look at those tone controls on the front panel and say Tone controls On an audiophile amplifier Ken just has to be jok ing And it isn t just that Marantz has put bass and treble tone controls on the Pearl Lite it s that it s also had the temerity to add a midrange tone control as well I don t think I ve seen one of those since mmm well not for a long time And for baffled readers who might be wondering about that reference to Ken the Ken those audiophiles would be referring to is none other than Marantz s own brand ambassador Ken Ishi wata who gets the final say on all products produced by Marantz and even gets to voice those Marantz products bearing his impri matur such as his Ken Ishiwata Signature products by selecting specific parts for use in the amplifier Ishiwata also gets to voice the models bearing his initials so the KI that s part of this amplifier s model number shows that this amplifier is one of the prod ucts that has benefited from his input So how is it that a golden ear signed off on an amplifier with bass treble and a 8 Ohms El ons M 20nms 250 N Oo oO Oo oO oO Power Output in Watts oa
4. it by adding treble when they master albums or to increase treble response to compensate for a tweeter whose high frequency response rolls off prematurely and that s a lot of them As for that midrange tone control well we ll get to that later in this review The answer to the second question is a little more complicated It s true that many of the tone control circuits used thirty or forty years ago were cut price versions that 34 Australian hi fi Marantz PM Kl Pearl Lite Integrated Amplifier boosted some frequencies excessively and were likely the major reason tone controls got a bad name But that s no longer the case and hasn t been for about the past two decades Modern tone controls now use sophisticated circuits that boost and cut only those frequencies that require it leaving all other frequencies untouched THE EQUIPMENT The Marantz PM KI Pearl Lite Integrated Amplifier which I think I ll hereafter refer to simply as the Pearl Lite in order to save a few trees not to mention the wear and tear on my computer keyboard presents a solid no nonsense front fascia to the world If we ignore the tone controls there are really only seven controls on it Of these the power on on switch the volume control and the input source selector with positions for Phono CD Tuner Aux DVD Recorder 1 Recorder 2 are absolutely essential The others control speaker selection two buttons that a
5. nents visible in the spectrum analysis a 2 order com ponent at 107dB 0 0004 THD a third order compo nent at 103dB 0 0007 and a fourth at 112dB 0 0002 You can just see fifth and sixth order components but they re essentially buried in the noise floor which is at 120dB 0 0001 Distortion increases when the amplifier is driv ing 40 loads with the second harmonic increasing in level to 100dB 0 001 the third to 88dB 0 003 The fourth remains at 112dB but a fifth or der appears at 105dB 0 0005 and a sixth at 115dB 0 0001 Overall THD N Marantz PM KI Pearl Lite as shown in the tabu lated results is only 0 005 Distortion increases when the dBr 1 00 1 1 7 iit H gt i i i 10 00 Hz 100 00 1000 00 10000 00 30000 00 Graph 6 Frequency response of line input referenced to a 1 watt output at OdB across an 8 ohm non inductive load Black Trace and across a combination resistive inductive capacitive load representative of a typical two way loudspeaker system Red Trace Marantz PM KI Pearl Lite dBr 1 00 y q r r 10 00 10 00 15 00 Jti 10 00 Hz 100 00 1000 00 10000 00 30000 00 Graph 7 Frequency response of line input referenced to 1 watt output at OdB across an 8 ohm non inductive load showing difference between CD red trace and Direct Pearl Newport Test Labs sansacdeasscl E EE ene EPE E EN P ene eer
6. richness and warmth of massed orchestral strings was glorious whilst at the same time the higher harmonics of the violins were just edgy enough to be true to life without the treble descending into synth like parody Bass response was quick and responsive able to reveal the underlying pulse of the music as a continuum while still maintain ing more than ample reserves to cater for transients or the momentary contributions of other low frequency instruments In terms of bass I was delighted to find that my audi tioning coincided with the release by Move of Peter Sheridan s CD Monologues amp Dialogues which contains 21 pieces for various low flutes On this CD Sheridan plays all low flute parts alto bass contrabass subcontrabass and hyperbass flutes multi tracking where necessary with the other performers being Sheridan s wife Lisa Maree Amos C Flute and Jane Hammond piano I confess I had not even heard of a hyperbass flute much less heard one live or recorded before hear ing this recording and hearing one played is 36 Australian hi fi Marantz PM Kl Pearl Lite Integrated Amplifier ear opening to say the least To put this into perspective the hyperbass flute is capable of playing E 1 or 41 2Hz a note that is fully explored on track 20 titled Groaning Oceans In homage to Paul Hogan Peter Sheridan s liner notes say of the hyperbass s sound on this track creepy sounds evocativ
7. Oo 20Hz 1kHz 20kHz Power Output Single channel driven into 8 ohms 4 ohms and 2 ohms non inductive loads at 20Hz 1kHz and 20kHz Marantz Kl Pearl Lite midrange controls You really don t have to look any further than a single button elsewhere on the front panel the Source Direct button Push this button and the tone controls disappear at least they become invisible to the amplifier s circuitry so the amp essentially becomes a purist audiophile amplifier at the push of a button But are tone controls really as bad as audiophiles suggest they are Who was it who originally proclaimed Thou shalt not use tone controls and was gratified when the world listened That s two questions and I have two answers The first is that having tone controls is no bad thing in some cases being able to make minor tonal changes can be decidedly advantageous You can use the bass tone control to add some bass to a speaker that s a bit bass shy either by design or because you ve put it in a position in your room in which it can t deliver maximum bass or you can take away some bass from a bass heavy speaker or one that has of necessity been positioned in a region of your listening room that results in an accentuated bass response The treble control can be used to tame a recording that has too much of it many recording engineers have very poor high frequency hearing and compensate for
8. aker terminals I mentioned previously LISTENING SESSIONS You really can feel the quality of the Pearl Lite before you ve switched in on simply by the way the rotary controls move under your fingers and the way each of the pushbut tons has such a precise action when you use it Marantz is one of those companies that really does put extra thought into the quality of the individual components it uses in its products Speaking of which if you look at the photograph of the rear panel you ll see not only the quality of the speaker terminals but if you read the small print you ll see this Pearl Lite model is made in Japan At a time when almost all consumer electronics components are being made in China that s highly unusual to say the least It would mean that the cost of the labour content of the Marantz Pearl Lite would be far higher than if the company had made the identical product in China I started off auditioning the Pearl Lite in its Source Direct mode because I am a great believer in first impressions and I was sure that the Source Direct model would certainly give me the best performance the Pearl Lite is able to give So although I was expecting good performance the fact that I was still impressed and impressed I certainly was is all the more significant The overall sound quality was outstanding delivering the music with a depth and solidity that was immensely satisfying to the ear The
9. atly improved musical experience You have to be careful not to boost the bass too much of course or to play back music too loudly after you ve boosted the bass but it s pretty easy to hear when you ve overcooked either the bass or the volume level or both The midrange control also proved great fun You can use it to get vocals that have been recorded a little too far back in the mix to punch through to front of stage And if you own a pair of vintage British speakers which traditionally always sound a little mannered due to their midrange being a little droopy tweaking the midrange control up to around to the 2 0 clock position will give the speakers a flatter frequency response and a far more modern sound Also depending on the sen sitivity of your ear feathering off the treble can take the zing from a metal dome tweeter while increasing it can add a bit of bite to an undoped fabric dome tweeter You can also use the tone controls simply in order to make the sound suit your own personal tastes or to correct minor deficien cies in the performance of your loudspeakers The only thing you need to remember is moderation DO NOT crank the controls to their extremes and if you move either the bass or treble controls further than around the 3 oclock position make sure you keep the overall playback volume at reasonable levels to avoid damaging your speakers Marantz is usually very reliable whe
10. ay except for volume the ear will prefer the louder sound It also works with non identical sounds so if you hear a demo of two different loudspeakers the ear will prefer the sound of the pair that s being played the loudest even if the quality is actually inferior to that of the pair that s being played at a lower level Some unscrupu lous dealers have been known to exploit this effect to clear out slow moving stock from their stores Another psychoacoustic phenom enon is that when presented by two identical musical items one following the other we 38 Australian hi fi humans like the music better the second time it s played even though nothing has actually changed So it was no surprise that I preferred the sound of the Pearl Lite in the Source Direct mode However it wasn t just the volume when using the amplifier with large floor standing speakers I think the bass response was definitely superior though I am talking about very tiny differences Hearing one played is ear opening to say the least However I have to say that despite the superiority of the Source Direct mode I often didn t use it because I found that I was really enjoying what I was able to do to various of my CDs by adjusting the bass treble and midrange controls which of course required disabling the Source Direct mode With smaller bookshelf speakers the ability to lift the level of bass very slightly meant a gre
11. cator also serves a second function which is to indicate if the amplifier s internal protection circuit has triggered If this circuit does trigger for a reason that will resolve itself such as excessive current draw caused by turning the volume too high when driving low imped ance speakers for example the Pearl Lite is clever enough to be able to reset itself after a few seconds Under similar conditions some other amplifier protection circuits require the amplifier to be manually turned off at the mains power switch and then turned back on before they will reset Interestingly this is ex actly what the User s Manual says is supposed to happen According to the Manual the amplifier enters standby mode but when I tested the circuit it didn t go into standby at all it reset itself automatically The rear of the amplifier is well laid out and the quality of all the fittings is much higher than you d TO e LTE MARANTZ PM KI PEARL LITE INTEGRATED AMPLIFIER Brand Maraniz Model PIV Kl Pearl Lite Category Integrated Amplifier RRP 2 290 Warranty Three Years Distributor QualiFi Pry Lid Address Mt Waverley VIC 3149 1800 242 426 03 8542 1111 lt info qualifi com au www qualifi com au 03 9543 3677 Tone controls Ability to defeat them First class ee ee LAB REPORT Readers interested in a full technical appraisal of the performance of the Ma
12. e doom laded partials final groans from far beneath the murky depths sound world that slips further downwards into the abyss of even darker frequen cies now that s what I call a flute However although the sound on this track is amaz ing I think my favourite track featuring the hyperbass flute is Differing Dialogues which was written by Melbourne composer Vincent Giles but my absolute favourite track on the disc at least for the moment is Stanley M Hoffman s Mediations and Memories despite his borrowing of the melody from the open ing of Stravinsky s Rite of Spring If you re a flautist and you haven t yet visited www lowflutes com I d visit right now When I re auditioned all the same tracks with the Source Direct button switched off it was obvious that the differences were so slight that I would have my work cut out for me In the end I had someone else switch the Source Direct button on and off while I was auditioning to get something more approaching a true A B albeit not the requisite double blind version However this also was less than ideal because there was a small volume difference between the two settings which meant I was more likely to prefer the louder Source Direct setting for no other reason than that it was louder For new readers this is a well documented psycho acoustic phenomenon For some reason when presented with two sounds that are identical in every w
13. ent e renee eee ene e ne ee nen e a ee ree 20 00 a ae KROAN OR PMS eA NS al A 40000 thane Aiton ra EEPE OE TEE E EAS AEE AIIE PTAA ET 60 00 H 4 4 2 t 01 a S fecnasensendacseesceses Poskewsedecd E O E 80 00 foneepeneedeecpeecebeceeeeenes ae aaltoa esne E E eee 100 00 I feet pe Paced ER N REEE EEE E E 120 00 i FE a DA Gaa fede fete fe fe ete E Gee EEE MAI 140 00 i i i i 0 00 Hz 4000 00 8000 00 12000 00 16000 00 20000 00 Graph 4 Total harmonic distortion THD at 1kHz referenced to rated output 100 watts across a 4 ohm non inductive load Marantz PM KI Pearl Lite dBFS Neee E EEE E E E E E E E E E E i A f i i i i i Newport Test Labs 10 00 20 00 4 30 00 4 40 00 50 00 4 60 00 70 00 4 80 00 90 00 4 100 00 110 00 h H 120 00 i 0 00 Hz 4000 00 t t t t t t t i 8000 00 12000 00 16000 00 20000 00 24000 00 28000 00 Graph 5 Intermodulation distortion CCIF IMD using test signals at 19kHz and 20kHz referenced to a 1 watt output at OdB across an 8 ohm non inductive load Marantz PM KI Pear Lite mimoa Marantz PM Kl Pearl Lite Integrated Amplifier Harmonic distortion of the Marantz PM KI Pearl Lite was measured as being very low as you can see from Graphs 1 through 4 At 1 watt into 80 there are essentially only three harmonic distortion compo
14. ite can deliver 150 watts into 20 loads response was 20Hz to 20kHz 0 15dB Both responses are shown as the traces on Graph 6 As you d expect the frequency response does change depending on the mode you use with the Direct mode returning the flattest most extended response as shown in Graph 7 If you use the standard CD input the response is still very respectable but rolls off below 60Hz to be 0 5dB down at 17Hz and 1dB down at 8Hz As you can see it also rolls off very slightly above 3kHz to be 0 2dB down at 20kHz Channel separation was at its best at 1kHz where a result of 91dB was recorded but diminished to the low 70s at the frequency extremes Channel balance was 0 17dB The effect of the tone controls on the frequency response is depicted in Graph 8 You can see that the bass and treble controls are quite peaky so the bass control s effect is effec tively restricted to frequencies between 10Hz and 200Hz with the control having the most significant effect around 9dB at SOHz The treble control s maximum boost cut fre quency is 16kHz where it has around a 8dB effect on the response The control has very little effect on frequencies below 3kHz The midrange control affects a very broad range of frequencies centred at 1kHz and extend ing from around 100Hz to 10kHz Boost and cut is only around 7dB but this is more than sufficient for the purpose dBFS 0 00 p 4 2 2 2 22 n
15. ith and reviewing various audiophile amps bereft of controls other than volume and input switching I d forgotten how much fun it can be to have tone controls or more accurately how much fun it is to actually use those controls to tailor the sound to suit my room my tastes and my mood at any given time Who knows perhaps Marantz could spearhead a tone control revival 4N greg borrowman EE PWr META LAB REPORT ON PAGE 40 lt CONTINUED FROM PAGE 34 TEST REPORT Rated with an output of 70 watts per channel into 8Q and 100 watts per channel into 4Q the tabulated results compiled by Newport Test Labs show that when tested the Marantz PM KI Pearl Lite exceeded these claims by a bit more than 1dBw Into 8Q loads the sample tested by Newport Test Labs returned 89 watts per channel at 20Hz 92 watts per channel at 1kKHz and 89 watts per channel at 20kHz all both channels driven Reducing load impedance to 4Q saw the power output rise to 136 watts at 1kHz diminishing slightly at the frequency extremes to 132 watts at 20Hz and 126 watts at 20kHz The lab also tested the Marantz into 2O loads and as you can see it proved capable of delivering around 150 watts per channel both channels driven at this low impedance Marantz s protection circuitry cut in to limit output current at 20Hz so its maximum power output at this frequency is 144 watts Maximum power output into 2O is 171 watts at 1kHz
16. llow you to connect and use one or two pairs of speakers and operate them independently or simultaneously or if you re listening via headphones not at all channel balance L 8 Ohms E 2 Ohms m 4 Ohms a a oe O N O O O 60 40 20 Power Output in Watts 20Hz 1kHz Power Output Both channels driven into 8 ohms 4 ohms and 2 ohms non inductive loads at 20Hz 1kHz and 20kHz Marantz Kl Pearl Lite 20kHz a rotary control with a centre detent posi tion and internal signal routing Source Direct and Power Amp Direct The Source Direct button removes all the tone control circuitry from the signal path as well as the balance control so the signal being input to the rear terminals goes straight to the volume control and thence via the power amplifier circuitry directly to the speaker terminals The Power Amp Direct button removes not only the tone controls balance control and volume control but even the source selection and pre amplifier circuitry from the signal path Essentially it turns the Pearl Lite from an integrated ampli fier into a dedicated power amplifier so if you use it in this mode you will have to provide your own external pre amplifier Keen eyed readers may have noticed a Mute indicator just to the left of the volume control Yes there is a muting circuit but it can only be operated using the remote control However this muting indi
17. mute the output using the remote The remote s and buttons adjust volume and the main volume control on the amplifier moves in sympathy with it as it s motorized However there s only a very small indent on the front panel volume control so if you re using the remote to adjust the volume from a distance it s hard to see how far the volume knob has turned A pointer of i oo A Oe el i pe b a a 4 i PF fF o Lt ata a ee a PELE B1 Power Output Both channels driven into 8 ohms 4 ohms and 2 ohms non inductive loads at 20Hz 1kHz and 20kHz Marantz KI Pearl Lite some kind would have been nice The Pearl Lite isn t particularly small measuring 440x379x129mm HWD nor is it particularly light 11 2kg This means it s a bit heavier than the Marantz PM7004 on which it s based This in itself is somewhat confusing because you d imagine from the name that it would be based on the well known PM KI Pearl I suspect this increase in weight over the PM7004 is due to the addi tional shielding on the toroidal transformer which is higher specced than the one pro vided inside the PM7004 Other differences Pee A l D p includes the fact that the phono equaliser on the Lite uses discrete circuitry slightly more capacitance in the power supply higher quality capacitors in critical circuit areas a double layer copper finished chassis and the higher quality spe
18. n it comes to rating the power output of its amplifiers and from what I heard I thought its 70 watt per channel rating seemed pretty much spot on because there was more than sufficient power on tap to drive even the most inefficient speakers I had to hand to levels that were more than loud enough to have the men from the council stand outside waving their sound pressure level meters But that power rating has its limits too so if you regularly have rave parties with more than 80 or 90 people crammed in your room you ll need a bit more power than the Pearl Lite s 70 odd watts not to mention a pair of quite substantial loudspeakers I tried connecting two pairs of 8O speakers using the Speakers A and B terminals and the Marantz drove both pairs as well as it drove each pair individu ally with more than enough volume and no audible distortion One really neat feature of the Pearl Lite is that it will enter its standby mode automati cally if it hasn t detected an audio signal for more than 30 seconds which will not only reduce power consumption but will also extend the operating life of the amplifier When the amplifier enters standby mode it remembers the last used input so a re start is simple and instantaneous CONCLUSION The Marantz PM KI Pearl Lite is a damn fine amp If I needed any more reason than that to buy it I d have to say that its tone controls would be a clincher for me After years of liv ing w
19. rantz PM Kl Pearl Lite should con tinue on and read the LABORATORY REPORT published on the page 40 Readers should note that the results mentioned in the report tabulated in performance charts and or displayed performance _ Mute only on remote No pointer on volume control using graphs and or photo graphs should be construed as applying only to the spe cific sample tested sey Lab Report on page 40 avhub com au_ hi fi 35 Marantz PM Kl Pearl Lite Integrated Amplifier normally expect particularly the speaker terminals All low level inputs are gold plated RCA sockets plus there s a screw for a turntable s ground wire In addition to the usual inputs and outputs there are Remote inputs and outputs which allow the Pearl Lite to be linked to other Marantz compo nents the matching Pearl Lite SACD player would be an obvious pairing so you can use the one remote to control them all Speaking of the remote it s Marantz RCOOO03PM It allows control of all the Pearl Lite s front panel controls with the sole ex ception of the Power Amp Direct function which I thought was very sensible In fact Marantz even makes it difficult to acciden tally activate the front panel control you have to hold the button down for more than three seconds before the circuit will kick in The remote is essential if you want to use the Pearl Lite s muting function because it s only possible to
20. the Marantz PM KI Pearl Lite breaking the magic 100dB barrier with a result of 102dB IHF A weighted referred to rated output The power supply becomes a little noisy when ne ed pel ae n TEk EDAR tE olii ha E the amplifier is working really hard as can be seen by the 12dB difference between the weighted and unweighted figures at rated output as against there being only a 6dB difference between the two figures when the signal to noise is referenced to a one watt output 85dB vs 91dB The one watt S N ratios which allow the PM KI Pearl Lite s noise levels to be compared with any other amplifier which is using a one watt refer ence reveal that the Marantz will have no audible noise when operating at all normal or even abnormal levels Power consumption was about what ld expect for a conventional linear i e non Class D amplifier so that I d expect the Marantz PM KI Pearl Lite to consume around 50 100 watts from your mains in normal day to day use or around the same as a conventional incandescent light globe In stand by the Marantz easily meets the new 2112 Australian standard for stand by power consumption with a green 0 3 watt test result Overall this is a very well de signed amplifier that can provide both volt age and current into loudspeakers and does so with minimal distortion and very little noise Well done Ken 4N Steve Holding 42 Australian hi fi
21. ut all harmonic distortion components are more than 80dB 0 01 down and most are more than 100dB down Frequency Response 1 watt o p 2 4Hz 150kHz 1cB 0 001 To put this all into perspective Frequency Response 1 watt o p 1 5Hz 270kHz 30B overall THD N at rated output was measured Channel Separation dB 720B 910B 73dB 20Hz 1kHz 20kHz by Newport Test Labs as being 0 003 Intermodulation distortion CCIF IMD was impressively low as you can see from Graph 5 The two test signal at the right regenerate some unwanted signal at 1kHz dB 1kHz degrees 20Hz 1kHz 20kHz Channel Balance 0 17 01041901037 0 51 0 005 0 003 85qB 91dB 90cB 102dB 24mV 212mV Interchannel Phase THD N Signalto Noise unwghted wghied 1 watt rated output GB referred to 1 watt output Signal to Noise unwghted wghted Input Sensitivity CD Input as you can see by the spike at the left of oF OOo Taian ont the graph but it s down at 97dB 0 0014 1 watt rated output There are some high frequency sidebands Output Impedance 0 08150 Ce Coe but these are all also around 95dB down Damping Factor 98 1kHz 0 0017 or more than 100dB down Power Consumption 0 3 30 3 watts Standby On 0 0010 Power Consumption 47 4 268 watts at 1 watt at rated output The signal to noise ratios measured by Mains Voltage Variation during Test 239 248 Minimum Maximum Newport Test Labs were excellent with
Download Pdf Manuals
Related Search