Appsys Flexiverter (FLX-MADI/SRC-SFP)
MADI to anything. Anything to MADI.
Including Sample Rate Conversion!
Available to pre-order. Expected Q2 2026.
Compact digital audio format converter
Convert between MADI and another format of your choosing (via an optional AUX card - sold separately)
Can also be used with a second Flexiverter for additional format conversion options, or as an extension to the Appsys Multiverter
Note: This page is for the base FLX-MADI/SRC-SFP Flexiverter unit only.
AUX cards are sold separately.
Description
SERIES
Multi-format. Highly Affordable. Most flexible.
Ultra-compact converters
+ Switchable format boards
The Appsys ProAudio Flexiverter is an ultra-compact box for converting between any of the most common digital audio formats (Standalone), or for adding additional I/O to the Appsys Multiverter (Extension).
Two Flexiverters can also be used together (Dual Mode), allowing users to create a custom device to perfectly suit their digital format conversion needs.
Each Flexiverter comes with a main format as standard, with a second slot for adding an additional interface via a range of switchable AUX boards, for converting between two different formats, or for expanding the I/O of the main format.
The Appsys Flexiverter range opens up a world of possibilities for conversion between the most common formats, as well as unique pairings and combinations (e. g. AES50 <> Dante, Dante <> Dante SRC, Dante <> AVB).
For other base unit options, see the full range of Appsys Flexiverters here.
Appsys Flexiverter (FLX-MADI/SRC-SFP)
The FLX-MADI/SRC-SFP is a compact MADI-to-anything converter with built-in 64 x 64ch Sample Rate Converter (SRC).
Features
Two MADI SFP ports, accepting ANY brand of SFP
Built-in wordclock IN/OUT
AUX port accepting any of the AUX Cards as conversion source/destination
When combined with AUX-MADI-COAX-DUAL or AUX-MADI-SFP-DUAL, it acts as MADI/MADI bridge with full network and clock domain separation, for up to 64x64ch at 96kHz. Other targets (e.g. DANTE) can be realized with the appropriate AUX card
64x64ch bi-directional Sample Rate Converter with top-notch specifications (>120dB THD+N, >134dB DNR), can be bypassed when desired
Supports sample rates from 44.1 to 192kHz on either side
FlexLink port for lowest latency, bi-directional transfer of 192 channels audio, clock and power
Remote control via USB: web remote (no software required), or UART command line
Dual/Redundant power supplies
Additional features when connected to an Appsys Multiverter:
- True channel-wise routing of all available channels (built-in plus AUX card)
- Sample-rate conversion using the SRC-64
- Web- or telnet based Remote Control
- Triple-redundant power supply (2 x DC; 1 x via FlexLink)
Combinations
Combine the FLX-MADI/SRC-SFP with any of the following formats into one 9.5 inch Flexiverter box:
Dante (with or without SRC)
AVB
ADAT
MADI (Optical, Coaxial, Twisted Pair)
AES-3 (with or without SRC)
AES50
AES67
WordClock
TDM
SDI 12G
HDMI
Analogue Outputs
Ravenna
How it works
The Appsys Flexiverter can be used in one of 3 ways: Standalone, Dual Mode, or as a Multiverter Extension.
1
StandaloneA single Flexiverter with optional Aux card installed
Insert and switch any AUX board in every main FLX unit and create the converter of your choice.
2
Dual Mode: Two FlexivertersA 1-to-1 converter with extra channels
Convert up to 4 formats with one pairing (Signal splitting to AUX or FlexLink).
3
Multiverter ExtensionConnect one flexiverter via FlexLink to the multiverter MVR-64 to add an additional format conversion, SRC, or more channels.
THE BACK PANEL: MOST FLEXIBLE
The main format I/O section on every FLX unit is different, the rest of the back panel is identical.
The FlexLink connection
The FlexLink connection is designed to connect two Flexiverters, or one Flexiverter with the Multiverter. It provides:
- 192 x 192 channels bi-directional transmission of 24-bit uncompressed audio (fully transparent to AES3 compatible metadata bits)
- Super-low link latency of 4 samples (ca. 83μs)
- Dedicated, high-quality reference clock signal with automatic configuration
- Power supply for connected devices (to reduce cabling), alternatively serves as redundancy scheme when both devices are powered: in case of power failure, both devices keep working from the remaining power supply.
- Uses standard HDMI cables (with locking screws), to provide easy field replacement in case of defects.
Rackmounts
The following rackmount kits are available as optional extras:
 |
RM-FLX1 Rackmount kit for mounting a single FLX device in 1U |
 |
RM-FLX2 Rackmount kit for mounting two FLX devices in 1U |
Specification
Dimensions
152x44x153mm (WxHxD) excluding connectors/buttons
152x44x169mm (WxHxD) including device-side connectors/buttons
Weight
560 g
Power consumption
+15V DC, 9W max (18W to power two devices via FlexLink)
Triple-redundant input (2x DC, 1x via FlexLink)
Cable length
FlexLink 1m / 3ft. max. recommended
Sample rates
32 / 44.1 / 48 / 64 / 88.2 / 96 / 128 / 176.4 / 192 kHz
Channel counts
FLX-Dante
64×64 @ 48kHz
32×32 @ 96kHz
16×16 @ 192kHz
plus additional AUX channels depending on AUX card
FLX-MADI
128×128 @ 48kHz
64×64 @ 96kHz, 32×32 @ 192kHz
FLX-AES3
16×16 @ 48/96/192 kHz (Single-wire)
8×8 @ 96kHz, 8×8 @ 192kHz (Dual wire), 4×4 @ 192 kHz (Quad wire)
FLX-AES50
96×96 @ 48kHz
32×32 @ 96kHz
FLX-AES67
64×64 @ 48kHz
32×32 @ 96kHz
16×16 @ 192kHz
AUX-ADAT
16x16ch ADAT I/O (2x Toslink In+2x out). Supports also S/PDIF.
AUX-AES3
8x8ch AES3 I/O on 1x DB25, fully transformer isolated
AUX-AES67
64x64ch AES67 network card
AUX-AVB
16x16ch / 32x0ch / 0x32ch MILAN-approved AVB
AUX-DANTE
64x64ch DANTE network card
AUX-MADI-COAX/OPTO/SFP
64x64ch, supports 56/57/64 channel mode + user bit transparency
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