DIA-250 & DIA-400 Integrated Amplifier/DAC User Manual
Contents
1. Intel Core 2 1 6 GHz or AMD equivalent with 1 GB RAM USB 2 0 interface Oneofthe following operating systems Windows XP with SP3 32 bit Windows Vista with SP2 32 bit amp 64 bit Windows 7 amp 8 32 bit amp 64 bit Apple OS X 10 6 4 Snow Leopard or higher Because there are so many PC configurations out there we cannot guarantee that you will be able to stream audio on USB even if your system meets the requirements above Windows PC Installation and Set Up Before you are able to stream audio from USB on your Windows PC the first time you will have to install the Gato Audio USB driver Connect your DIA 250 DIA 400 to a free USB port on your computer and load the CD ROM that came with the DIA 250 DIA 400 into your PC Setup will start automatically If not click on Start gt Computer Right click on the icon of your CD DVD drive and choose Install program Choose your prefered destination for the Click Next to start installation installation and click Install E Setup Choose Install Location Choose the folder in which to install Gato Audio USB Audio Driver v1 61 0 Welcome to the Gato Audio USB Audio Driver v1 61 0 Setup Wizard Setup will install Gato Audio USB Audio Driver v1 61 0 in the following folder To install in a This wizard will guide you through the installation of Gato different folder dick Browse and select another folder Click Install to start the installation Audio USB Audio Driv2. 13V balanced 6 5 V unbalanced 0 001 96 pre out 20 kO RCA or 40 kO Balanced 750 26 dB 10 db headroom 40 160 1 pair gold plated XLR Neutrik 2 pairs of gold plated RCA stereo 1 USB type B 1 Toslink 1 RCA coaxial 1 pair gold plated XLR Neutrik 1 pair of gold plated RCA Stereo 2 pairs of gold plated safety banana 1 mini jack 115 VAC or 230 VAC 50 Hz 60 Hz 1000W max 20 mm sand filled 6 3 AT lt 1W 23W 1000W 325 x 105 x 420 mm 12 8 x 4 1 x 16 5 10 kg 22 lb DIA 400 2x400W 80 2x800W 40 20 Hz 20 kHz 0 5 dB and 2 Hz 70 kHz 3 dB lt 0 01 at rated power gt 110 dB 13 V balanced 6 5 V unbalanced 0 001 96 pre out 20 kO RCA or 40 KO Balanced 750 26 dB 4 10 db headroom 40 160 1 pair gold plated XLR Neutrik 2 pairs of gold plated RCA stereo 1 USB type B 1 Toslink 1 RCA coaxial 1 pair gold plated XLR Neutrik 1 pair of gold plated RCA Stereo 2 pairs of gold plated safety banana 1 mini jack 115 VAC or 230 VAC 50 Hz 60 Hz 1600W max 20 mm sand filled 8 AT 1W 35W 1600W 325 x 105 x 420 mm 12 8 x 4 1 x 16 5 13 kg 28 7 Ib GATO AUDIO Gato Audio Marielundvej 28 DK 2730 Herlev Denmark Phone 45 4095 2205 www gato audio com hello gato audio com 2 8 Ei a a g fa S z 8 E w 8
3. DIA 250 amp DIA 400 Integrated Amplifier DAC User Manual Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC GATO AUDIO Contents Don t bea stranger elet a o a EA a e ka o e Rt Ea E Package contents d Safety TANSEY e X e About the amplifier General design Class D Output Stage Analogue Input Stage D A Converter USB Versatility Connectivity LED Display fa in Oo ia in a ia o Setting up your amplifier Basic connection Overview Connecting a computer to USB Connecting an Apple iPad to USB o 00 N N N How does it work Poweron uoj Standby Adjusting the volume Mating o Input selection Display dimming Sample rate read out Direct Uu Protection warnings AO AO MO i OO i00 Oo RC 2 remote control ror E RR DET RE E JO How to insert replace the battery 10 FUNCT OE NS arte eee tach hoo cn chee BeBe o ELS Installing USB Driver mn cn tal teo a ee a ROLL e a id a eo alt tte et etn canoes I BOU NE ITV GIVES o me entrata T RA et Windows PC Installation and Set Up t I Mac Installation and Set UP WR NS D USB audio troubleshooting e nose na A III e ie la Make it last mmm mmm IM MONROE 14 If all else fails Sailor T
4. The display is now turned off except for two LEDs indicating the dimmed display state Whenever a change is made to the settings of the amplifier such as adjusting volume or changing input the display will light up for 4 seconds showing the Display dim change that is being made Press either of the buttons again to exit display dimming mode GATO AUDIO No sample rate available Home Theater direct HOT warning OFF warning Sample rate read out The DIA 250 DIA 400 can read and display the sample rate of the USB RCA and OPT digital input channels The DIA 250 DIA 400 can be set to display this in two different ways 1 The display on the right shows the selected input channel eg USB Press the USB button on the RC 2 remote control and the sample rate will be shown in kHz instead of selected input channel name for 4 seconds 2 The display on the right only shows the sample rate When changing input channels the channel name will be shown for 4 seconds and then return to display the sample rate To toggle between the two read out modes press and hold the Dim button on the back of the amplifier for 2 seconds Direct The Direct function bypasses the volume control turning this amplifier into a fixed level power amplifier This can be very useful in surround setups To activate this mode select input IN1 and press and hold the Input button on the front panel of the amplifier for 4 seconds The left display
5. will read HT To disable the function press and hold the Input button on the front panel of the amplifier for 4 seconds The amplifier remembers this setting in standby mode and when the DIA 250 DIA 400 is switched off Protection warnings The DIA 250 DIA 400 is equiped with a sophisticated protection circuit to protect the amplifier and or the connected equipment in case of failure The DIA 250 DIA 400 features two warning signals A HOT sign will blink in the right display due to temperature problems If this happens turn off the amplifier mains switch and wait about 10 minutes for the heat sinks cool down before turning on the mains again If a lot of heat is generated within a short period of time please check the following e The ventilation around the amplifier e The speaker cable and cable connections The specifications of the connected loudspeakers An OFF sign will blink in the right display Turn off the amplifier mains switch and please check the following before turning the mains on again e The speaker cable and cable connections The connected equipment That you are not playing above the clipping area of the amplifier If the amplifier keeps blinking after the powering up routine please turn off the amplifier and contact your dealer or the national distributor Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC RC 2 remote control The RC 2 is an infrared remote control for the Gato Audio
6. Connectivity We had our eye on versatility and connectivity when designing these new amplifiers The DIA 250 and DIA 400 offer not only a wide range of digital and analogue inputs but also line outputs a trigger signal for external power amplifiers and a configurable home theater input The HT input can turn the amplifier into a fixed level power amplifier for use in a surround setup without compromising the sonic performance LED Display By choosing a large high contrast white LED dot matrix display we gave the DIA 250 and DIA 400 a distinct appearance easy to understand easy to see and operate even at remote control distance In addition to displaying output level and selected input it also displays the sample rate of the digital input revealing the quality The LED display is fully dimmable by the remote control GATO AUDIO Setting up your amplifier Basic connection Follow these steps for setting up your system in this sequence 1 Place the DIA 250 DIA 400 as per the instructions on page 5 2 Connect all inputs to the amplifier 3 Connect your loudspeakers to the amplifier 4 Connect mains power cable to the amplifier and turn it on 5 Select input and volume setting Enjoy Overview Mains Mains Fuse Right speaker Left speaker switch socket compar
7. DIA 250 and DIA 400 Howto insert replace the battery The RC 2 runs on a standard CR2032 3 V button battery 1 Remove the small lid on the bottom side of the remote 2 Insert or replace the CR2032 3 V button battery 3 Reinstall the small lid on the bottom side of the remote Functions Standby l Display Mute k USB RCA Optical Input 1 Input 2 Balanced Volume up Volume down Next input channel A Press the button to select next input channel Previous input channel Press the button to select previous input channel Press the button to put the amplifier in standby Press it again to turn it on Press the button to dim the display Press it again to restore the display to normal Press the button to mute the amplifier Press it again to return to the previous volume level Press the button to select the digital USB input channel Press the button to select the digital coaxial input channel Press the button to select the digital optical input channel Press the button to select the analogue Input 1 channel Press the button to select the analogue Input 2 channel Press the button to select the analogue balanced input channel Press the button to increase the volume Press the button to decrease the volume RCA Optical dI Input 1 Input2 Balanced J gt gt X oS 9 GATO AUDIO Installing USB Driver Requirements Minimum computer configuration required for USB audio streaming
8. n Ch Volume Value dB Mute Master am 1 00 0 00 D L A nt 1 00 0 00 O 2 A 1 00 0 00 O Open Finder gt Choose Utilities gt Open Audio MIDI setup In Audio MIDI setup select the Gato Audio USB 2 0 device and then Configure Speakers choose Use this device for sound output Set your prefered sample B rate and bit resolution at Format MEME Configure speakers p I Use this device for sound output E USB audio troubleshooting USB audio devices have stronger requirements for both USB hardware and software than other USB devices The following section describes the most common issues that may rise and their possible solutions Known hardware issues and possible solutions A faulty hardware component e g USB cable or USB port may not have an impact on standard USB devices such as a FLASH drive or a printer but can be catastrophic for a USB audio device USB cables Quite often the USB cable or its connectors is the cause for USB signal distortions Some cables available in the market are not suited for USB 2 0 high speed communication 480 Mbps Also the maximum allowed cable length of 5 meters should not be exceeded Try using a different cable Try a shorter cable less than 2 meters Stay away from special USB cable offerings optimized for audio or cables which include additional functionality such as status LEDs PCB mounted USB ports On some PC main boards or laptops
9. signal quality of some USB ports is insufficient for USB audio streaming The cause could be that on the PCB USB signals are routed close to a switching voltage regulator for example Try using a different USB port to connect the audio device USB hubs and front panel mounted USB ports External USB hubs and ports mounted on a front panel or elsewhere in the PC case are a possible source of USB signal distortion Quality of cables or connectors used to connect the external USB port with the main board could be insufficient or internal cables are placed close to the power supply or other sources of electrical noise Try using a USB port that is mounted directly on the main board Known software issues and possible solutions Due to the real time nature of USB audio streams there are also requirements for the operating system and third party software components installed on the system Software components that make real time behavior of the operating system worse are not compatible with audio streaming applications in general Conflicting drivers Generally it can be stated that the set of device drivers that ships with Windows behaves well If problems occur then they are typically caused by third party drivers that are to be installed for hardware which Windows does not support by default So if a hardware component is supported by an in box driver then this driver is to be preferred and a third party driver should not be installed W LAN or Ether
10. d and smooth analogue music Analogue Input Stage The analogue input stage is where everything begins It not only connects external inputs and the built in D A converter with the output stage it adapts impedances adjusts levels and switches signals A super gentle embrace of the delicate analogue signals is important for the total performance of the amplifier At Gato Audio we have utilized our many years of experience in voicing analogue amplifiers to make this particular stage perform at its very best We tuned the input stage to perform with a natural and lifelike sound affecting the original signal as little as possible D A Converter The built in D A converter offers real high end performance enabled by the use of a dedicated power supply a balanced driven Burr Brown PCM1794 D A converter an optimized high bandwidth I V converter and an analogue stage with low Q low pass filters All digital inputs are upsampled to 24bit 192kHz This D A converter will upgrade any digital source such as wired or wireless streaming from your computer or CD drive to a high end level of detail and musical performance USB Versatility The true 24bit 192kHz digital input via the state of the art asynchronous USB circuit is especially worth highlighting It enables the possibility of a sonic performance vastly above that of any CD It is the key note of making these amplifiers a quality enhancing connection point for your Mac PC or even your iPad
11. dio DIA 250 DIA 400 as To adjust output format click Properties and playback device and click Set Default select the Advanced tab 8 Sound Speakers Properties Playback Recording Sounds Communications General Levels Enhancements Advanced Select a playback device below to modify its settings Default Format Select the sample rate and bit depth to be used when running Speakers in shared mode Realtek H Read 24 bit 48000 Hz Studio Quality X P Test Realtek Digital Output 16 bit 44100 Hz CD Quality R udio 16 bit 48000 Hz DVD Quality E16 bit 96000 Hz Studio Quality 16 bit 192000 Hz Studio Quality 24 bit 44100 Hz Studio Quali ao Speakers 24 bit 48000 Hz Studio Quality Guo Mu 24 bit 96000 Hz Studio Quality ealtek High Definit Set Default Mi Properties aa c j cancel Mac Installation and Set Up No driver installation is needed on the Mac The driver will be installed ans Audio Devices automatically when the DIA 250 DIA 400 is connected to your Mac i sitan Une mour Gato Audio USB 2 0 Audio Out for the first time IR 4 Clock source Gato Audio Internal Clock ja E i 4 ilt in Digi J input Outputs Built in Output To set up your Mac to stream audio to the DIA 250 DIA 400 4 Built in Line Output P Source T Default a a a Built in Digital Output Format 44100 0 Hz my 2ch 24bit k x Ww T
12. e hot water or any type of concentrated detergent solvent thinner or any other volatile substance on the surfaces or you may cause permanent damage to the surface coating Keep the cabinet away from prolonged contact with rubber or PVC materials Do not expose the amplifier to direct sunlight or other heat sources If all else fails don t panic Every Gato Audio product comes with a minimum 2 year warranty See our website for details This warranty does not cover damage or wear directly or indirectly caused by improper use violence tampering with or unauthorized access to or servicing of any part of the product If you are in need of service or repair please do not hesitate to contact us at hello gato audio com or visit our website www gato audio com for more information GATO AUDIO Technical specifications Output power Frequency response Total Harmonic Distortion Signal to noise ratio Line out maximum level Total Harmonic Distortion Input impedance Line output impedance Voltage gain Recommended speaker load Connectors Balanced analogue inputs Unbalanced analogue inputs Digital inputs Balanced analogue outputs Unbalanced analogue outputs Speaker output Trigger 12 V Size amp Power Power Requirements Fuse Power consumption stdb idle max Dimensions WxHxD Weight DIA 250 2x 250W 80 2x500W 40 20 Hz 20 kHz 0 5 dB and 2 Hz 70 kHz 3 dB lt 0 01 at rated power gt 110 dB
13. echnical specifications 48 Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC Don t be a stranger Thank you for purchasing the Gato Audio DIA 250 DIA 400 We are absolutely confident that it will bring you many hours of listening pleasure We hereby cordially invite you to join the Gato Audio family by registering your product online You may also consider signing up for our newsletter to receive information about exciting new products events and technical updates All this and more on www gato audio com Our very best Gato Audio Package contents Please check that the following is included in the package 1 Gato Audio DIA 250 DIA 400 integrated amplifier 1 mains cable 1 Gato Audio RC 2 remote control e 1CR20323V battery 1CD ROM with USB driver for Windows This manual which you should be reading now GATO AUDIO Safety first Mains plug and cable Insert the mains plug fully into the mains outlet socket Donotuse any mains cable other than the one provided with this amplifier Donot defeat the ground connection Donot move the amplifier around while it is connected to mains Donot place heavy objects on the mains cable or place the cable near high temperature objects Donotuse damaged mains plugs or socket outlets Liquids Electricity and liquids are not a safe combination therefore When cleaning the amplifier remove the mains plug Donothandle the mai
14. er v1 61 0 Itis recommended that you dose all other applications before starting Setup This will make it possible to update relevant system files without having to reboot your computer Click Next to continue Destination Folder Program Files Gato Audio Space required 2 1MB Space available 20 5GB Ne cancel Install cancel During the installation process on Windows XP you may see this message Please just click Click Finish to complete the installation Continue anyway Setup Software Installation Completing the Gato Audio USB Audio Driver v1 61 0 Setup Wizard t The software you are installing has not passed Windows Logo 2 testing to verify its compatibility with Windows XP Tell me why this testing is important Click Finish to complete the installation WC Z 2 E am EA Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the software vendor for software that has passed Windows Logo testing Continue Anyway STOP Installation Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC After the installation follow these steps to setup Windows to stream to your Gato Audio device d q Click Start gt open Control panel Select Hardware amp sound 5 click on Sound Select Gato Au
15. es it work Power on Use the mains switch on the back of the amplifier to turn it on The amplifier is now in standby mode Only the microprocessor and the standby LED are powered during standby Therefore the DIA 250 DIA 400 has an ultra low standby power consumption of less than 1W Standby Activate the amplifier by pressing l on the remote control or the Standby button on the front panel When the amplifier enters standby mode again it will remember the selected input channel and volume level If the volume level is higher than 50 it will be reduced to 50 when the amplifier exits standby mode Standby Adjusting the volume Turning the volume control knob clockwise increases the volume Turn it counter clockwise to decrease the volume The volume can also be adjusted by pressing the or button on the remote control Muting For complete silence simply press the h button on the remote control Press the mute button once more to return to the previous volume level Mute Input selection Use the Input button on the front panel to select between the different input channels Inputs can also be selected with the remote by pressing the direct input selection buttons or the W or A buttons The input will switch the channels in this order QNI gt IN2 gt BAL gt USB gt RCA gt OPT3 Display dimming The display can be dimmed by a pressing the Display button on the RC 2 remote control or the Dim button on the back of the amplifier
16. ic performance connectivity versatility stunning looks and compact design Both amplifiers feature built in D A converters with electrical optical and USB inputs High quality analogue input is via RCA connectors or via XLR connectors for true balanced signals Both balanced and unbalanced line outputs are provided Even the least powerful DIA 250 offers 250 watts per channel into 8 ohm loads and the DIA 400 no less than 400 watts per channel Both amplifiers double their power output into 4 ohm loads Modern Class D technology enables extremely high efficiency thereby providing both enormous power and huge voltage swing Besides the obvious benefit of having this much power the huge voltage swing from these powerhouses gives effortless dynamic headroom without clipping all in the service of bringing you stunning musical performance Class D Output Stage The DIA 250 and DIA 400 amplifiers offer state of the art Class D output stages with dedicated and optimized switch mode power supplies The multiple stage power amplifier is built around proven technology from International Rectifier optimized with a precision high frequency oscillator and PWM modulator A pair of precision switching MOS FET transistors with super low on resistance ensures the high frequency switching is done perfectly and with as little loss as possible The output filters are made from quality PP capacitors and low DCR coils converting the high power PWM signals back into detaile
17. net device drivers Quite often it can be observed that device drivers for W LAN adapters monopolize the computers CPU causing clicks and drop outs when streaming audio to USB A few Ethernet drivers also have such issues Try to find an updated W LAN driver or try an older version of the driver If no suited driver can be found disable W LAN or Ethernet while audio streaming is running Virus scanners or personal firewall software Normally this kind of software includes some components to perform filtering or scanning work in the computers CPU Often such components keep the CPU busy for long periods which can cause clicks and drop outs when streaming audio to USB Try to pause or disable the software while streaming audio to USB Try uninstall the software and use a different product with similar functionality Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC Make it last Please apply simple common sense to maintain the sound quality and lifespan of your new Gato Audio amplifier Here are a few guidelines Regular care wipe the surfaces carefully by using a clean soft dry cloth Cleaning if necessary wipe the hard surfaces clean using a soft cloth dampened only with clean water Grease stains or finger marks can be removed carefully with a clean soft cloth lightly dampened in a mix of clean lukewarm water and a single drop of dish washing liquid Then wipe the surfaces dry using a soft dry cloth Be careful never to us
18. ns plug with wet hands Do not spray any liquid directly onto the amplifier Donot place liquid containers above or near the amplifier Keep liquids away from the amplifier And Thisis nota toy and should not be handled like one by children OR adults Donotremove the covers of the amplifier for service see page 14 Donotattempt to put foreign objects inside the amplifier for service see page 14 Donotcover the amplifier with cloth Donot place the amplifier on sloped or unstable surfaces When the amplifier will not be used for a long time remove the mains plug Never connect or disconnect cables when the amplifier is switched on Donotshort the amplifier outputs This unit is made for indoor temperature 15 25 C or 59 77 F If it has been exposed to cold temperature let it adjust itself to indoor temperature before use Make sure that your amplifier is able to breathe by securing a minimum safe distance around the heat sinks of 100 mm or 4 inches The amplifier can get hot during use Normal operating temperature is from room temperature to 50 C or 1229 F sd NER 100 mm 4 100 mm 4 L 4 Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC About the amplifier General design The Gato Audio DIA 250 and DIA 400 Class D Integrated Amplifiers are designed and built to a vision of combining technology power son
19. tment terminals terminals aman e E Speal 2 A 9 Made in Denmark ip pata Menn mo a Balancedout i E O O i KOMO LO 7 Dim f sn 002101d01 EX E el em pey N NULLE GO 12V trigger USB Optical Coaxial Analogue Balanced Analogue Balanced Display setting input input input inputs input output output i to Toggle On Off iPad Apple AirPort Express Sonos Phono Pre Amp High End CD Player Power Amp External Equipment Mac AppleTV Squeezebox Surround Pre Amp Receiver Professional Audio Active Speaker Equipment PC Harddisk Player CD DVD BD Player TV Subwoofer Laptop Streaming Player Docking Station CD DVD BD Player TV or Sat Cable Receiver Docking Station Volume read out Input Sample rate read out 4 I Standby button Volume control knob Input selection button Gato Audio DIA 250 amp DIA 400 Integrated Amplifier DAC Connecting a computer to USB Before connecting the DIA 250 DIA 400 to your computer via USB please read installation instructions on page 11 Connecting an Apple iPad to USB It is possible to stream music from an iPad to the USB port of the DIA 250 DIA 400 An Apple Camera Connection Kit is required for this feature The kit is available from the Apple online store or other Apple accessory shops Plug the camera connector into the iPad dock connector and connect it to the DIA 250 DIA 400 with a USB cable Simply start your music app and enjoy the music How do
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