SPL MADISON – 16+16 Channel AD/DA Converter and MADI Interface

SPL Madison MADI Interface

SKU: SPLMADI Category:


16+16 Channel MADI Interface

The SPL Madison offers the pure SPL analog sound for every MADI equipped digital console, audio router and PC MADI card.

With 16 input and 16 output channels in a single rack space, the Madison combines state of the art signal conversion with highly reliable clock and MADI processing. And as a true SPL unit it is simple to operate, easy to expand and, of course, an awesome sounding conversion system.


  • 16 AD and 16 DA converters in 1U
  • Superb sounding converters with a sophisticated analog section on 36V audio rails
  • +24dBu professional output level
  • Best price/performance value
  • Up to 64 I/Os on 1 MADI port (4 units)
  • Latency-neutral MADI chaining
  • 44.1 to 192kHz, ±10% vari-speed
  • SPL clock-shop for jitter-free operation
  • Ultra-compatible, always operational MADI IO with ultra low conversion latencies
  • Four directly selectable reference levels: 15/18/22/24
  • Simple operation and setup right from the front panel controls
  • Ergonomic, distance-readable meters for clear level status indication of any I/O channel
  • Fanless, absolutely silent low-power design (max. 30W)
  • Redundant power supply optionally
  • Four analog, 8-channel multicore DB25 sockets (TASCAM industry standard)
  • Made in Germany


Broadcast and live professionals rely on the still-unsurpassed MADI since about 20 years now – with jitter-free, rock-solid transmission of many audio channels per single wire and low-cost cabling with lengths far above one mile, MADI simply offers unique advantages.


Why Madison?

As a company with a rich heritage in analog audio engineering, it has always been our idea to put all our knowledge into the analog sections of a converter. Excellent converter technology requires an appropriate analog environment, and that is where a true difference can be made – a difference against existing solutions, and a difference in sound of course.

We have designed an analog audio section on 36V audio rails, reaching output levels of 24dBu. The result is simply amazing. With its straight-forward operation, flexible expansion, and pristine sound, the price per channel ratio of the Madison may set a new benchmark.

And for the first time, SPL’s analog sound is coming to digital environments.


A good fit everywhere

Thanks to its rich I/O equipment, the Madison makes it a breeze to integrate professional analog gear into larger multichannel infrastructures. With four popular reference levels, operational sample rates between 44.1 and 192kHz, multicore analog I/O, fibre MADI I/O and word clock I/O, the Madison simply fits everywhere.

Up to four units can be connected to a single MADI port on a digital console, a MADI PC card, or any professional audio routing infrastructure. The MADI port offers excellent and near-zero-latency digital transmission of up to 64 I/Os with galvanic insulation. And since MADI is the emerging new studio I/O standard, the Madison is the perfect interface for home and project studios, commercial recording studios and scoring stages.

So whereever you may have a need for reliable and pure conversion of multiple analog audio channels, the Madison meets your demand brilliantly.


Converter and Connections

Resolution: 24 Bit
Sample Rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz
Varispeed: ±12.5% in 56 CH mode, -12,5% in 64 CH mode
Reference Levels/Inputs: 24dBu max, selectable 22dBu, 18dBu, 15dBu
Reference Levels/Outputs: 24dBu max, selectable 22dBu, 18dBu, 15dBu
Clock: Internal clock circuitry from SPL, Wordclock or MADI
Expandability: 4 units via MADI chain for 64 channels
Wordclock: Input 75 ohms, terminated impedance
Wordclock Level: Input TTL/CMOS5/CMOS3; Output 3.3Vtt
MADI [email protected],1 & 48kHz: 56/64ch
MADI [email protected] 44,1 & 48K: 28/32ch
MADI [email protected] 44,1 & 48K: 14/16ch
MADI [email protected] 44,1 & 48K, 4x 44,1 & 48kHz: SMUX/HighSpeed
Audio Inputs   
16 analog, balanced inputs, DB25/Tascam
MADI optical digital input (up to 64 channels)
Audio Outputs   
16 analog, balanced outputs, DB25/Tascam
MADI optical digital output (up to 64 channels)

Analog Inputs/Measurements

S/N: 115dB (A-weighted, 48kHz)
Dynamic Range: 115dB (-60dBfs, A-weighted, 48kHz)
S/(N+D): 102dB ( -1dBfs, 48kHz)
Interchannel Isolation: 110dB (48kHz)
Passband Response: 22kHz (-0.02dB, 48kHz)
Passband Ripple: +/- 0.005dB (Decimation-LPF, 48kHz)
Stopband Attenuation: 100dB (Decimation-LPF, 48kHz)

Analog Outputs/Measurements

S/N: 115dB (A-weighted, 48kHz)
Dynamic Range: 115dB (-60dBfs, A-weighted, 48kHz)
S/(N+D): 100dB (-1dBfs, 48kHz)
Interchannel Isolation: 110dB (48kHz)
Passband Response: 21.8kHz (-0.04dB, 48kHz)
Passband Ripple: +/- 0.06dB (Digital Filter, 48kHz)
Stopband Attenuation: 70dB (Digital Filter, 48kHz)

Rear Connections

1 IEC power connector
USB Type A socket (no audio, firmware updates only)
Wordclock input via BNC socket with Termination switch
Wordclock output via BNC socket with Termination switch
MADI optical input, Type SC
MADI optical output, Type SC
2 x DB25 8-channel analog inputs (Tascam)
2 x DB25 8-channel analog outputs (Tascam)

Power Supply, BTU, Dimensions & Weight

Power Supply: Switchmode, 90-264 V AC, 50/60 Hz, 35W max.
Thermal Units: 65 BTU/h typ., 110 BTU/h max.
Dimensions (HxWxD, mm): 44 x 482 x 260 (without sockets D=240)
Dimensions (HxWxD, inch): 1,7 x 19 x 10,2 (without sockets D=9,4)
Weight kg: 3,05 (3,17 with 2nd Power Supply)
Weight lbs: 6,72 (6,99 with 2nd Power Supply)

Weight 6.72 lbs



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