Appsys ProAudio SRC-64 (Sample Rate Converter)


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Order by 2pm for next day delivery (Mon-Fri)

Shipping Information


All orders can be shipped with free delivery. For orders over £50.00 this will be a next day courier service and for orders of less than £50.00 this will be First Class Royal Mail postage.

Other chargeable service options are available (see below).

Delivery Notifications

You will receive an email to the address you have supplied to us when your order has been dispatched.

Delivery Methods and Timescales

The delivery time scale is specified on the product page to indicate when you should expect to receive your order. If all item(s) are in stock and your order was placed before 2pm, subject to passing necessary checks, your order will be shipped the same day. Orders received just after 2pm are also often dispatched the same day, but this cannot be guaranteed.

See below for delivery options:

Royal Mail – First Class Recorded Delivery*

  • Price = FREE
  • Delivery Time – We cannot guarantee delivery time via Royal Mail. Whilst items shipped using Royal Mail First Class usually take 1 - 2 days, please note this is NOT a guaranteed next day delivery service. If this is a problem, please select one of our courier service options.

*Only available on orders with a value of less than £50

Courier – Next Working Day Service

  • Price = Free (Orders of £50+) / £9.95 (Orders of less than £50)
  • Delivery Time – Next working day from date of dispatch (see above)

Courier – Pre-noon, Next Working Day Service

  • Price = £9.95 (Orders of £50+) / £19.95 (Orders of less than £50)
  • Delivery Time – Next working day from date of dispatch (see above)

Courier – Saturday Delivery Service

  • Price = £19.95
  • Delivery Time – The first Saturday following date of dispatch (see above)

Due to the nature of the products we sell, we operate a strict fraud screening process and therefore we are only able to deliver to the billing address.

In the event of a delay, we will contact you either by email or telephone as soon as reasonably possible.

While 99% of UK locations are valid for next day/Saturday delivery, there are a few remote locations which are not covered.

Synthax Audio (UK) cannot deliver outside of the UK and Republic of Ireland*.

*RME products cannot be shipped to the Republic of Ireland.

Missed Deliveries

If you are not in to receive the order at the time delivery is attempted, a card will normally be left to notify you of the missed delivery attempt. This will allow you to either telephone the courier company to arrange a re-delivery at a more convenient time or collect it from your local courier depot or Royal Mail sorting office. For security reasons, all items require a signature.

If for any reason the item is returned to us (e.g. incorrect address specified, multiple failed delivery attempts), then we will inform you immediately by email as soon as we receive the item. From this point forth, you will be given a choice whether you wish us to re-dispatch the item or cancel the order. Please refer to our Cancellations & 14 Day Returns Procedure for more details. For items where delivery failed through no fault of Synthax Audio (UK), you will be liable for the original shipping charge, any courier surcharges and any subsequent delivery charges.

Late Deliveries or Dispatch

We are able to ship almost every order in the specified timescale. However, in very rare circumstances there can be an unforeseen delay. If this does happen, we will make it our priority to get your order dispatched from our warehouse as soon as reasonably possible.

There are also rare cases, beyond our control, when the delivery company itself has a problem which causes a delay in transit. In these situations we will do our utmost to liaise with the relevant delivery company to ensure delivery is completed as swiftly as possible.

Consequential Loss for Late Deliveries

If a delivery is late, then we will provide a refund of any delivery fee that we charged you. We do not provide financial compensation to cover consequential losses, e.g. for time taken off work to receive a delivery, or if the item is intended as a gift and you have to purchase the same item from a more expensive retailer.

Our full terms of sale can be viewed here.

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Sample Rate Converter
For Appsys ProAudio Multiverter

  • Asynchronous Sample Rate Converter
  • Add-on Module for the Appsys ProAudio Multiverter
  • User-installed
  • Top-notch performance: THD+N = -133dB typ, -120dB max.
  • True asynchronous, bi-directional conversion of 64x64 channels
  • Supports arbitrary sample rates in the range from 32 up to 192kHz
  • Handles up to 64ch @48kHz, 64ch @96kHz, 32ch @192kHz
  • Free selection of any multiverter interface as asynchronous input and/or asynchronous output
  • Special modes available (2*AES50 48ch/96kHz <=> Dante 48ch/48kHz, 2*MADI 64ch@96kHz <=> MADI 64ch@48kHz etc.)
  • Fully configurable via multiverter's menu, configuration saved in presets
  • Asynchronous domain can be clocked from any input, or via internal hi-precision clock
  • Can be disabled if required with a few clicks
  • Mounts on internal socket: back extension port remains available
  • Field-upgradable firmware


Add Sample Rate Conversion To Your Appsys ProAudio Multiverter

The Appsys ProAudio SRC-64 add-on module adds the capability of asynchronous sample rate conversion to your Appsys Multiverter. Designed as an internal add-on module, it leaves the "Extension" port available to other break-out boxes.

The SRC-64 features optimum analogue performance (THD+N -134dB typ.), 64-channel, bi-directional conversion between any interfaces supported by the Multiverter, plus a number of special modes for maximum flexibility.

The SRC-64 can be assigned to any input interface and also any output of the Multiverter, giving a true bi-directional conversion between both clock domains.

Existing Appsys ProAudio Multiverter routing capabilities are fully preserved.

Special modes allow the use of two MADI or AES50 ports together, to send and receive all 64 channels at 96 kHz (48ch for AES50). Conversions between MADI 64ch@96k => MADI 64ch@48k or vice versa - using two MADI ports for the 96k part and one for the 48k part - are also supported.



Dimensions 115 x 94 x 27 mm (W x H x D)
Weight 65 g
Operating Temperature 0..+70°C, non-condensing
Storage Temperature -40..+85°C, non-condensing
Power Consumption 7W max.
Channel count Up to 64 per direction in x1 modes (44.1 / 48 kHz)
Up to 64 per interface in x2 modes (88.2 / 96 kHz)
Up to 32 per interface in x4 modes (176.4 / 192 kHz)
Sample rates
between 32 kHz and 192 kHz
Analogue performance THD+N: -133 dB typ. / -120dB max.
Dynamic range (A-weighted, 20 Hz to 20 kHz): 139 dB

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