spl Channel One MK2 Premium / Model 2950

The new model in 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 One Track.
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:

- Transistor / tube preamplifier
- SPL's De-Esser
- Compressor / limiter with noise gate
- EQ section
- Headphone monitor
- Lundahl I/O transformers


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

 Microphone input
Frequency response 10 Hz-100 kHz
(100 kHz = -3 dB)
Common mode rejection (@ -20 dBu) 1 kHz:
-80 DB / 10 kHz: -78 dB
THD & N Gain: A-weighted
20 dB -97.1 dBu
40 dB -91.1 dBu
65 dB -69.4 dBu
Dynamic range 118 dB

Line / Instrument input
Frequency response 10 Hz-180 kHz,
(100 kHz = -3 dB)
Common mode rejection (@ 0 dBu) 1 kHz:
-80 DB / 10 kHz: -78 dB, Line input only
Total harmonic distortion gain (A-weighted):
5 dB -99.4 dBu
20 dB -97.2 dBu
42 dB -79 dBu
Input impedance Line: 20 kOhm / Instr.: 1 MOhm
Maximum input level Line: +22 dBu / Instr. +14 DBu
Dynamic range 119 dB

Output data
Maximum output level XLR / jack +20 dBu
Output impedance 50 ohms

Power supply
Toroidal transformer 20 VA
Fuses 315 mA (230 V/50 Hz)
630 mA (115 V / 60 Hz)

Dimensions
Standard EIA 19 "/ IHE 482 x 88 x 210 mm
Weight 4.15 kg

Lundahl I / O Transformers
We think a good part of the "warmth" that is commonly associated with vintage gear comes from transformers. Transformers with the low end and lower mids sound rounder, full-bodied with more punch. The top end gets a silky touch and benefits from improved presence without sounding boosted. Reasons are reduced odd harmonics (which produce harsh top end impressions) and a slower characteristic compared to electronic stages which causes a more voluminous sound.
We recommend transformers especially for vocals while electronic stages can be better for highest precision in signal transmission (transients), but in the end it's a question of personal taste, for example applications or which mics are in use.

Used in SPL preamps or channel strips, the input transformers add about 14dB gain (depending on the microphone). This must be added to the scaled values. The additional passive gain relieves the complete unit permanently at any gain level. That's why the input transformer is more important in preamps, but to benefit from all possible sonic effects and full operational safety, both input and output should be equipped with transformers. If SPL preamps only offer an input transformer option, the simple reason is not enough space.