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  • SPL Channel One AD - Front -
  • SPL Channel One AD - Rear -
  • Close up of AD card, which is installed with SPL Channel One AD -

SPL Channel One AD with Digital Output

(Special Order. Usually ships in 1-7 days. Please ask us for current ETA.)
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Product Description

(Special Order. Usually ships in 1-7 days. Please ask us for current ETA.)

Channel One AD with Digital Output

Recording Channel

The new model 2950 brought a facelift to one of our best-selling products. Now the new SPL design represents the common origin of our channel strips Frontliner, Channel One and Track One. However, technically we did not change anything to continue the success of the Channel One with tried and tested quality.

The Channel One comes with all tools onboard for recording voices, instruments and digital or analog audio sources with the highest sound quality:

  • Hybrid Transistor/tube preamplifier
  • De-Esser
  • Compressor/limiter
  • Noise gate
  • 3-band EQ
  • Headphone monitor
  • AD converter
  • Made in Germany

Each stage contributes to the concept as the ideal recording front-end for world-class sounds the easy way: intelligent automation ensures both intuitive and fast as well as musical operation for the finest recording results.

Sound On Sound (UK), Paul White
"Until you've tried something that works this well, the words 'smooth' and 'detailed' won't have nearly as much meaning as after playing with the Channel One. If you're wondering where that elusive 'produced' vocal sound is hiding, look no further – it's in here!"

The Preamplifiers

  • The microphone input features 48V phantom power, phase reverse function and a subsonic filter.
  • The low-impedance Line input has a precise balancing stage for connecting studio equipment.
  • The low-noise, high-impedance instrument input is easily accessible on the front panel.


The renowned SPL De-Esser subtly yet effectively removes offending sibilants by reliably eliminating only the “S” frequencies with its unique phase-cancelling processing technology. Auto-Threshold ensures constant processing even with varying microphone distances. All you need do is to turn the knob until the sibilants are gone.


The Insert (Send/Return) allows for insertion of external processors or can be used to record the pure preamplifier signal.


This section is based on SPL’s Double-VCA-Drive® circuitry for outstanding noise and distortion characteristics. The compressor is extremely easy to use via a single knob. But the signal-dependent automation not only allows for set and forget operation, it also grants very muscial results in any situation. Actually it is much more difficult to destroy a recording with wrong compression settings.

Noise Gate

The noise gate operates flawlessly - reverbs are recognized and not cut off.

3-Band EQ

The Channel One provides a new EQ design especially optimized to process vocals, acoustic and electronic imstruments. Low, Mid Hi, and Air-Bands allow for both corrective adjustments and/or effective sound designing processing. Gadget: a distortion control might be useful sometimes to apply for decent distortions to signals that deserve it.

Headphone Monitor

Provides an individual mix for the singer/speaker - latency problems from digital systems are avoided.


Frequency response

  • Mic Preamp: 10 Hz-100 kHz (100 kHz = -3 dB)
  • Line/Instrument preamp: 10 Hz-180 kHz (100 kHz = -3 dB)

Common mode rejection (@ -20 dBu)

  • 1 kHz: -80 dB
  • 10 kHz: -78 dB

THD & N (mic preamp): A-weighted

  • 20 dB -97.1 dBu
  • 40 dB -91.1 dBu
  • 65 dB -69.4 dBu

THD & N (line/instru preamp): A-weighted

  • 5 dB -99.4 dBu
  • 20 dB -97.2 dBu
  • 42 dB -79 dBu

Input impedance:

  • Line: 20 kOhm
  • Instr.: 1 MOhm

Max. input level:

  • Line: +22 dBu
  • Instr.: +14 dBu  

Dynamic range: 119 dB

Max. output level XLR/jack: +20 dBu

Output impedance: 50 Ohm

Headphone Amplifier Gain (mic input and 0dBu output level)

  • -20dBu at 25%
  • -10dBu at 40%
  • -5dBu at 55%    
  •  0dBu at 70%
  •  +5dBu at 75%
  •  +10dBu at 90%
  •  +14dBu at 100%

Power Supply

  • Toroidal transformer 20 VA
  • Fuses 315 mA (230 V / 50 Hz)
  • Fuses 630 mA (115 V / 60 Hz)
  • Voltage Selector 230V / 115V
  • Ground Lift switch

Dimensions & Weight

  • WxHxD: 482x88x210 mm; 19"x3.46"x8.27"
  • Weight 4.15kg;9.15lbs


0dBu = 0.775V. Subject to change without notice.


AD Converter Module 1090


Optional 24Bit/192kHz AD converter


The Analog/Digital Converter Module 1090 is an optional digital output for compatible SPL units (see below) with a plug-and-play design for easy installation.


It offers an S/P-DIF output with both coaxial and optical connectors in parallel.
The heart of the module is a 24-bit converter with a variable sample rate of up to 192 kHz. Highly accurate quartz oscillators ensure a clean, low-jitter master clock.
The internal sample rate can be switched between 44.1, 48, 88.2 and 96 kHz. Other sample rates (32, 176,4 and 192 kHz are set by external syncronization.
The converter can be synced to other digital devices via a S/P-DIF input.
The internal oscillators are automatically disabled when an external clock signal is present to prevent interference.






Warranty Information

Comes with Manufacturer's 2 Year Warranty, parts and labor.

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