The Sonoma Headphone & DAC unit


We want your M1 experience to be as enjoyable as possible. We have collated some of the most frequently asked questions about the Model One System below. If you have a question which is not listed below, please contact us at

Sonoma support FAQs

I am seeing a red light on amplifier/DAC – what does this mean?

Headphone cable is not connected properly either to the amplifier/DAC unit or to each ear cup. Please check for a good connection.

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I cannot hear sound via analog connection?

First check whether the analog/digital source selector is in the analog position. If it is, then check that the Hi/Low rear panel selector switch is in the appropriate position. If it is, then check your source component to ensure it is operating correctly (Is the volume set to mute on a portable audio player, for example?).

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There is no sound via S/PDIF digital input?

First check 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.

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There is 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/PDIF signal is also present – if it is, either power off the S/PDIF source or, use a menu function to disable the S/PDIF digital output. If a S/PDIF signal is NOT present, check whether the XMOS USB driver has been selected on your computer and in your playback software. Check also whether the output has been muted within your playback software!

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I am experiencing stuttering/glitching in USB playback?

Is the USB connection made via a USB hub? We have found that some cheap hubs can introduce playback issues. Try connecting the M1 directly to your computer. 
If no hub is used, check the activity level/number of open programs on your computer. It could be that something else needs computer resources, which is interrupting playback.

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Purchase FAQs

How can I purchase a Warwick Acoustics system?

Please contact for more information.

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What is the warranty for a Warwick Acoustics system?

A Warwick Acoustics system is built to the highest possible manufacturing standards, and is warrantied to be free of any defects in components or workmanship for a period of 2 (two) years from the date of original purchase, excluding cables and leather parts which are covered for a period of 1 (one) year. Original owners who register their product on the Warwick Acoustics website within 30 days of purchase will receive an additional year of warranty coverage for a total of 3 years parts and labor coverage from date of purchase.

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Are there any exceptions to the warranty?

The warranty does not cover products that have been damaged by accident, abuse, misuse, or improper operation. Use of headphone amplifiers or power supplies that are NOT part of the supplied  system components will VOID THE WARRANTY.

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How do I get warranty service for my Warwick Acoustics product?

Warranty service should first be requested through the customer care team. Once the customer care team has provided the return authorization number and shipping labels, the customer will ship the warrantied unit to the warranty center for repair or replacement. Shipment costs must be paid by the customer, insured and include parcel tracking service. Warwick Acoustics will not be responsible for products lost in transit, uninsured, or non-trackable.

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