MA2CHBOX.XL is a compact, free-standing reference class headphone amplifier for MADI (AES10) and AES3 signals for use in MADI-based broadcast and recording environments.
Its extremely small footprint makes it ideal for viewing rooms, edit suites or small OB vehicles where space is at a premium.

The device features three MADI ports, an AES3 port, a headphone output and a stereo line level output.

Any stereo pair or single mono channel of three MADI streams or the AES input can be routed independently to either headphones, AES output or line out. The AES input signal may also be embedded into the MADI stream.

MA2CHBOX.XL offers highest flexibility for MADI monitoring and line checking as it provides three interface standards for MADI:

  • optical SC (single-mode or multi-mode)
  • coaxial (BNC)
  • SFP

The Small Form Factor Pluggable cage can be fitted with any SFP module suitable for the customer’s application.

All MADI outputs remain active at all times, enabling conversion between all three formats. Port routing offers independent output feeds for each MADI output.

The integral USB port is available for remote control, embedding of serial data and for firmware updates which offers the possibility for future upgrades with extended functionality.

The device may be operated locally or remotely via the MA2CHBOX Remote software. Remote connection can be made by USB and ‘Serial over MADI’.

MA2CHBOX Remote offers access to the following features (and many more):

  • channel-based routing (194 x 196 channels)
  • serial embedder routing
  • midi-over-madi routing
  • device presets

The settings and the routing matrix are stored inside the device.

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