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Shipping Information

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All orders from our webshop can be shipped with free delivery:

  • For orders over £50.00, this will be via a next working day delivery courier service

  • For orders under £50.00 this will be via First Class Royal Mail postage* (unless a different courier option is selected at checkout)

*Please note: Royal Mail First Class is NOT guaranteed next day delivery. For guaranteed next working day (or Saturday) delivery, please select one of our other courier options (see delivery options 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.


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). Note that for guaranteed Saturday delivery, orders must be placed before 2pm on the Friday. Orders placed after 2pm may still arrive on Saturday, but this cannot be guaranteed.

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.


Terms of Service

Our full terms of sale can be viewed here.

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Monitor controller
for MADI and AES3

  • Reference class headphone and speaker monitor controller for MADI and AES3
  • 3x MADI I/O ports: 1x BNC, 1x SC (single mode or multimode), 1x SFP (requires transceiver)
  • 1x AES3 I/O port or Line Outputs
  • 194 x 194 audio router - controlled via DirectOut software, globcon or 3rd party systems



The DirectOut MA2CHBOX.XL is a compact desktop headphone monitoring unit designed to integrate directly into broadcasting environments where MADI is the audio transport standard. Its extremely small footprint makes it ideal for viewing rooms, edit suites or small OB vehicles, where space is at a premium.

Any channel in the incoming MADI stream may be selected for monitoring; alternatively, the unit may be operated in stereo mode, where any two odd/even-numbered channels may be selected as a stereo pair.

The unit incorporates a stereo headphone amplifier which can drive up to +12 dBu into a ¼” TRS socket on the front panel. The selected channel(s) are also fed as audio outputs for external equipment in both analogue line level and AES3 digital formats to a rear panel connector.

Three options are provided for MADI input: coaxial (BNC socket), optical (SC connector) and an SFP carrier for the user to fit their own fibre optic (or coaxial) cartridge. A MADI loop-through output on a second connector is provided in all cases, and a power-safe relay maintains the coaxial output in the event of a power failure. Different MADI standards (48 kHz and 96 kHz frame rates and 56 or 64 channels) arecatered for with auto-detection. Multiple inputs may be used; selection of input source is made from the front panel. MA2CHBOX.XL includes a 194 x 194 audio router, allowing any channel from any MADI input (or the AES3 input) to be routed to any channel in any MADI output (or the AES3 output). The router is controlled from an external software application via the USB port.

All three MADI outputs are active whichever input is selected, allowing the unit to be used as a MADI format converter; a coaxial input MADI stream is converted to an optical signal (at both the SC connectors and the SFP cartridge), or an optical MADI input at either type of connector may be re-distributed as a coaxial signal from the BNC connector. Conversion is independent of the unit’s headphone monitoring functions.

The easy-to-use front panel controls consist of a single multi-function rotary control for selecting input channel, monitor level and menu selection and four internally-illuminated push buttons for input source selection. A two-digit seven-segment display shows the active channel and volume level (during adjustment).

The rear panel carries the coaxial and optical MADI I/O connectors. An empty SFP cartridge carrier is included; the user may install a cartridge of their choice to suit their own connectivity standards. A 9-pin male Dsub connector carries balanced analogue line-level outputs (max level +24 dBu) and both a matching AES3 output and an AES3 input.

The AES3 input is independent of the unit’s MADI functions, and either (or both) channels may be selected as monitor sources if required. A Dsub-to-XLR breakout cable is included with each MA2CHBOX.XL unit.

The rear panel includes a USB 2.0 port for external control and firmware updates.

MA2CHBOX.XL is mains-powered with an internal Universal PSU (85 – 264 VAC, 47 – 63 Hz).

Headphone monitoring of any two channels of an optical or coaxial MADI signal in a compact desktop unit. Analogue and AES3 outputs of the monitored signal are provided. The unit can also act as a MADI format converter (coaxial-to-optical or vice versa).

  • Stereo headphone monitoring unit for edit and viewing suites in MADI environments
  • Compact, free-standing desktop unit
  • MADI inputs may be coaxial or optical (SC or SFP)
  • MADI outputs for all formats for loop-through or routed connection
  • All MADI outputs always active, allowing conversion between all three formats
  • Auto-detection of 48/96 kHz frame rates and 56 or 64-channel MADI standards
  • Any mono channel, or stereo pair of channels may be monitored
  • Front panel stereo headphone output
  • Monitor mix available as external output in analogue and AES3 formats
  • AES3 input; may be selected as alternative monitoring source
  • USB port for expanded remote control options and firmware updates
  • Internal universal mains PSU

In-rack MADI/AES3 audio monitoring of up to eight mono (or four stereo) channels may be performed using the 1U KYRA unit.


MADI ports (I/O):1 x coaxial BNC*, 75 Ω
1 x optical SC-Socket multi-mode
1 x SFP (empty cage without module)
AES3 ports (I/O):1 x DSUB-9 (XLR adaptor included)
Line Out:1 x DSUB-9 (XLR adaptor included)
Headphone Out:1 x 6.3 mm TRS jack, stereo
Sample rates:44.1, 48, 88.2, 96, 176.4, 192 kHz (+/- 12,5%)
MADI formats:48k / 96k Frame, 56 / 64 channel, S/MUX
Line Out
Output level:max. +24 dBu @ 0 dBFS
SNR:115 dB RMS unweighted
THD @ 0 dBFS:-105 dB
Headphone Out
Output level:max. +12 dBu
SNR:114 dB RMS unweighted / 117 dB(A)
THD @ 0 dBFS:-95 dB @ 600 Ω
RS-232:1 x USB 2.0 (virtual COM port)
Baud rates:19200, 38400, 115200 baud
Remote Software:MA2CHBOX Remote (Windows®), globcon
Remote Methods:USB, Serial over MADI
Service:USB 2.0 for firmware updates (Windows®) and remote control (Windows®)
Display:1 x segment display
Power supply:1 x 84 V to 264 V AC / 47 Hz to 63 Hz / safety class 1
Power Consumption:5 W
Dimensions:Width 140 mm
Height 42mm
Depth 140mm
Weight:about 1 kg
USB Serial driver:Windows®
SFP modules (LC single-mode or multi-mode) BOXMOUNT.XL for 19’’ rack mount
Device variants
Single-mode:MADI port: SC-Socket single-mode

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