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Model One Electrostatic
Headphone System

USER MANUAL

April 2017

l

Version 1.0

Sonoma Acoustics Inc., 1434 Spruce St., Suite 100, Boulder, CO 80302, USA

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Summary of Contents for M1

Page 1: ...Model One Electrostatic Headphone System USER MANUAL April 2017 l Version 1 0 Sonoma Acoustics Inc 1434 Spruce St Suite 100 Boulder CO 80302 USA ...

Page 2: ...lectronic mechanical or otherwise including photocopying and recording or in connection with any information storage or retrieval system without written permission from Sonoma Acoustics Inc The Sonoma logo is a registered trademark of Super Audio Center LLC Colorado USA and is used under license REVISION HISTORY VERSION DATE DESCRIPTION 1 0 04 2017 First public release ...

Page 3: ...el Connections Controls 4 Headband Adjustment 4 Positioning the Headphones 5 Connecting the Headphone Cable 5 Detaching the Headphone Cable 6 Connecting the Headphones to the Amplifier 6 Connecting Analog and Digital Sources to the Amplifier 6 Assembling and Connecting the Power Supply Unit 7 Powering the Unit ON 8 CHAPTER 3 OPERATION 9 Analog Digital Source Selection 9 Analog Input Selection 9 Di...

Page 4: ...irmware Version Windows Users 12 Checking and Updating the Firmware Version Macintosh Users 13 Configuring Your Playback Software 15 CHAPTER 5 CARE AND MAINTENANCE 16 Power Down 16 Cleaning 16 Replacing the Ear Pads 16 Replacing the Headband Pad 17 CHAPTER 6 TROUBLESHOOTING 18 CHAPTER 7 CUSTOMER SERVICE 20 GLOSSARY 21 SPECIFICATIONS 23 WARRANTY 24 ...

Page 5: ... producto o incluidas en la documentación Aviso Leia e siga todos os avisos e instruções assinalados no produto ou incluídos na documentação Avviso Leggere e seguire tutti gli avvisi e le istruzioni presenti sul prodotto o inclusi nella documentazione Warning Do not block any ventilation openings Install in accordance with the manufacturer s instructions Avertissement Ne bloquez aucune ouverture d...

Page 6: ... sécurité Si la prise fournie ne s insère pas dans votre prise femelle consultez un électricien pour le remplacement de la prise femelle obsolète Warnung Der Sicherheitszweck des gepolten bzw Schukosteckers ist zu berücksichtigen Ein gepolter Stecker verfügt über zwei Pole von denen einer breiter als der andere ist Ein Schukostecker verfügt neben den zwei Polen noch über einen dritten Pol zur Erdu...

Page 7: ...ass auf das Netzkabel getreten oder das Kabel geknickt wird insbesondere an den Steckern den Steckdosen und am Kabelausgang am Gerät Advertencia Proteja el cable de energía para que no se le pise ni apriete en especial cerca del enchufe los receptáculos de conveniencia y el punto del que salen del equipo Aviso Proteja o cabo de alimentação de ser pisado ou de ser comprimido particularmente nas fic...

Page 8: ...rtenza Non aprire lo chassis All interno non ci sono parti riparabili dall utente L apertura dello chassis invaliderà la garanzia se non viene effettuata da un centro ufficiale o autorizzato Sonoma Acoustics Warning Disconnect the external AC power supply line cord s from the mains power before moving the unit Avertissement Retirez le ou les cordons d alimentation en CA de la source d alimentation...

Page 9: ...en sind das Gerät Regen oder Feuchtigkeit ausgesetzt wurde es nicht auf normale Weise funktioniert oder fallengelassen wurde Avvertenza Il Sonoma Acoustics M1 non contiene parti su cui l utente possa intervenire Per spegnere il dispositivo rimuovere il connettore di alimentazione Per qualsiasi intervento rivolgersi a personale di manutenzione qualificato È necessario intervenire sul dispositivo se...

Page 10: ... including interference that may cause undesired operation Canadian ICES Statements Canadian Department of Communications Radio Interference Regulations This digital apparatus does not exceed the Class B limits for radio noise emissions from a digital apparatus as set out in the Radio Interference Regulations of the Canadian Department of Communications This Class B digital apparatus complies with...

Page 11: ...Fällen der Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist Attention Ceci est un produit de Classe B Dans un environnement domestique ce produit risque de créer des interférences radioélectriques il appartiendra alors à l utilisateur de prendre les mesures spécifiques appropriées This symbol on the product or its packaging indicates that this product must not be disposed of with your ...

Page 12: ...d magnesium ear cups for strength and lightness 3 Handmade Cabretta sheepskin ear and headband pads 4 Custom low capacitance headphone cable 5 Discrete FET Class A energizing amplifier 6 32 bit 384 kHz ESS SABRE Reference DACs 7 32 bit 384 kHz AKM Premium ADCs 8 Custom 64 bit fixed point double precision Digital Signal Processing 9 Ultra low phase noise master oscillator 80 femtoseconds of jitter ...

Page 13: ...orm to European standard EN 50332 on maximum volume level however permanent hearing damage may still occur if you listen at a very high level for long periods Please protect your hearing by exercising some caution with the volume control especially when doing extended listening 6 This product MUST be connected to a grounded mains outlet 7 There are NO user serviceable parts inside and due to the h...

Page 14: ... the following items 1x M1 headphone 1x headphone cable 1x Quick Start Guide headphone The amplifier DAC box contains the following items 1x M1 energizing amplifier DAC unit 1x universal power supply unit 1x IEC power cord region specific 1x USB cable 1x Quick Start Guide amplifier FRONT PANEL CONTROLS 1 Analog digital input selector 2 Analog digital input indicator 3 Min volume level 4 Volume con...

Page 15: ...ey are properly positioned on your head The headband can be adjusted by means of an inner band that can be lengthened shortened as needed To adjust the band hold the headband with one hand and carefully pull or push the ear cup with the other When new the inner band may be a little stiff Ensure that the same length of inner band is visible on both sides of the headphone so that they sit level on y...

Page 16: ...moves the electrostatic transducer causing it to work like a microphone CONNECTING THE HEADPHONE CABLE As soon as you have properly adjusted the headband it will be time to connect the headphone cable to the headphones The headphone cable connects to the headphone via high precision self latching connectors The cable is color coded and a small red band at the end of the strain relief indicates the...

Page 17: ...to the headphone connector Be sure to align the red dots on the connector and chassis Push the cable into the connector until it latches If you need to detach the cable grasp the barrel of the connector and carefully pull backwards until the cable disconnects as shown above Please ensure that the amplifier is switched OFF before connecting disconnecting the headphone cable CONNECTING ANALOG AND DI...

Page 18: ...ables or USB hubs NOTE Windows PC users please refer to the section XMOS Driver Installation for Windows Users before attempting to use a PC with this product ASSEMBLING AND CONNECTING THE POWER SUPPLY UNIT When all audio sources and the headphones have been connected to the amplifier DAC unit it will be time to connect the power supply unit however before beginning please ensure that the volume c...

Page 19: ...s the switch to the down position Provided all connections have been properly made the front panel status indicator should glow WHITE Your Sonoma M1 system is then ready to use If the amplifier DAC detects a fault condition the status indicator will glow RED In this case first power the unit OFF and re check all the connections If the problem persists please refer to the Troubleshooting section ON...

Page 20: ...ces with up to 850 mV rms maximum output The RCA HI inputs should be driven by source devices with up to 2 1 V rms maximum output Higher maximum output source devices can be used for these inputs but levels will need to be reduced to avoid over driving the analog inputs DIGITAL INPUT SELECTION The M1 amplifier DAC unit has been configured to monitor the presence of a valid S PDIF signal When detec...

Page 21: ...locate the support features manuals downloads etc for the M1 and click on the link for XMOS USB Driver This will link to a file of the following type Sonoma_M1_XMOS_xxxx exe where xxxx refers to the specific version of the file The latest version will always be available from the Sonoma Acoustics website Depending on the browser used and your browser settings you may be asked whether you want to s...

Page 22: ... location first use the Browse button to locate the appropriate folder location Installation may take a few moments when complete click the Next button When the driver has been successfully installed you will obtain a confirmation message Click Finish to complete the installation process You may also see a further completion message If so click Yes and then power cycle turn off and then on again y...

Page 23: ...e loaded onto the device in this case v 1 0 8 Compare the displayed version number to the latest firmware version available at www sonomaacoustics com support If the version number is different please see the section Updating the Firmware Version Windows Users for instructions on how to update UPDATING THE FIRMWARE VERSION WINDOWS USERS Should you need to update the M1 s firmware version begin by ...

Page 24: ...he update process has successfully completed click on Exit to close the updater utility CHECKING AND UPDATING THE FIRMWARE VERSION MACINTOSH USERS NOTE the following applies to Macintosh OSX 10 8 and later Download the Sonoma M1 Updater Application Sonoma M1 Updater app from the Sonoma Acoustics downloads page in the support section at www sonomaacoustics com support With the Sonoma Model One USB ...

Page 25: ...tton During the update you will see the progress bar advance and messages will appear at the bottom of the dialog window Do not remove the USB cable or close the application during the update To be safe please make sure that your computer is plugged into mains power When you see the UPDATE COMPLETE message under the blue bar you can close the application NOTE You must turn off the amplifier and tu...

Page 26: ...64 and DSD128 be sure to configure your playback software to pass all sample rates up to these limits NOTE if you use the Control Panel to look at the sample rate when transmitting DSD it will appear as 176 4 kHz for DSD64 and 352 8 kHz for DSD128 due to the need to use the DoP format for transmission If you plan to play DSD source files through your M1 you will need to ensure that your playback s...

Page 27: ...se failure of the pads Failure to follow these instructions will invalidate your warranty REPLACING THE EAR PADS Ear pads may need replacement after years of extended use or if inadvertently damaged Replacement pads are available from your dealer or the Sonoma Acoustics website To remove the old pads carefully insert a finger into the ear cup so that it is behind the ear pad as much as possible Ta...

Page 28: ...art as indicated As you push the sidewall out pop the tab out With the tab removed grasp the old headband pad and slide out of the headband as indicated The new headband pad needs to be inserted into the slot within the headband rail and then carefully moved around the headband until the end reaches the in place tab on the other side of the headband When the new headband is fully in place press th...

Page 29: ...eck whether the analog digital source selector is in the digital position If it is then check whether the S PDIF digital output of your source has NOT been turned off via a menu function If not try a different S PDIF cable to eliminate breakages connection issues No sound via USB input First check whether the analog digital source selector is in the digital position If it is then check whether a S...

Page 30: ...e driven only by lower level source devices with up to 850 mV rms maximum output The RCA HI inputs should be driven by higher level source devices with up to 2 1 V rms maximum output If a low level source is connected to the RCA HI level inputs using an adapter there may not be enough gain available Low level source devices should always be connected to the 3 5 mm LOW input for best sound quality ...

Page 31: ...e contact our Customer Service team via one of the following methods Please provide as much detail as you can about the problem and your specific configuration Be sure to leave your name and contact details too E mail support sonomaacoustics com Online www sonomaacoustics com support general inquiry 20 CUSTOMER SERVICE ...

Page 32: ...ect Current DoP DSD Over PCM DSD Direct Stream Digital DSP Digital Signal Processing Digital Signal Processor DVD Digital Versatile Disc EN European Norm European Standard as developed by CEN FET Field Effect Transistor H Height HPEL High Precision Electrostatic Laminate Hz Hertz aka cycles second IEC International Electro technical Commission in Inch kg Kilogram kHz Kilohertz lb Pound weight M1 M...

Page 33: ...a RMA Return Merchandise Authorization rms Root Mean Square SACD Super Audio Compact Disc SMPS Switched mode Power Supply S PDIF Sony Philips Digital Interface Format USB Universal Serial Bus V Volt VA Volt Ampere W Width WASAPI Windows Audio Session Application Programming Interface 22 GLOSSARY ...

Page 34: ...oP Digital Coaxial Input S PDIF accepts digital audio formats up to 24 bit 192 kHz PCM Analog Input High Level Dual RCA 2 1 V rms Analog Input Low Level 3 5 mm 850 mV rms DAC Dual mono 32 bit 384 kHz DACs with balanced outputs ADC 32 bit 384 kHz multi channel ADC with balanced input buffers Digital Signal Processing DSP 64 bit double precision fixed point processing Amplifier Energizer Discrete FE...

Page 35: ...unreasonable use or maintenance cosmetic damage including but not limited to scratches dents and broken parts caused by the owner failure to follow all operating instructions accident excess moisture excess temperature power surges connections to improper voltage supply or any non Sonoma energizer unauthorized alteration or modification of original condition Acts of God products purchased from una...

Page 36: ... submission of a Warranty Claim https sonomaacoustics com support repair inquiry a customer will be issued a Return Merchandise Authorization RMA and a return shipping label Sonoma Acoustics will pay for ground shipping to its local service center for all warranty returns Customers should include the RMA with their returned product s and indicate the RMA number on the shipping box SHIPPING FROM SO...

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