SPL Audio Channel One Mk3 Channel Strip

For over 20 years, Channel One has been a synonym for a high-quality and extremely musical recording and mixing channel strip.

In the newest Mk3 version, this classic has been thoroughly revised and, in addition to a higher internal audio voltage (now +/-18 V) for even better, more detailed sound, a further improved preamplifier section, an integrated Transient Designer, a Tube Saturation stage and a Mic A/B comparison option for two microphones and other great features that raise the modern recording and mixing studio to a new level of quality. With de-esser, compressor and equalizer, all the important tools of a real channel strip are still on board. Whether it’s a microphone, line, or instrument signal, the Channel One Mk3 makes any source sound like a professionally recorded signal.

The new design of the SPL Studio Series perfectly highlights the sonic qualities of this 3rd generation Channel One.

• Looks great, feels great – and lasts for a lifetime
Channel One Mk3 has a 4 mm thick, black anodized aluminum front panel and aluminum knobs milled from solid. The housing is made of high-quality steel and is powder-coated in elegant black.

• Sounds good
With all SPL devices we develop not only according to plan, but also by ear. Many important components are installed on the circuit boards using Through-hole technology. This way we can ensure that we can use the best sounding components.

Analog inputs & output; XLR (balanced)
• Maximum input gainl (Mic, +9.5dB – +68 dB): 13.5 dBu
• Maximum input gain (Line, -20 dB – +16 dB): 22.5 dBu
• Maximum input gain (Instrument, -6 dB – +30dB): 15 dBu
• Input impedance (Mic/Line): 10 kΩ
• Input impedance (Instrument): 1.1 MΩ
• Output impedance: 75 Ω
• Frequency range: 10 Hz – 200 kHz
• Equivalent Input Noise (EIN): -126 dBu
• Noise (A-weighted, Mic Preamp, 150 Ω, 30 dB Gain): -95 dBu
• Noise (A-weighted, Mic Preamp, 150 Ω, 50 dB Gain): -79.5 dBu
• Noise (A-weighted, Mic Preamp, 150 Ω, 68 dB Gain): -61.7 dBu
• Noise (A-weighted, Line/Instr Preamp, 600 Ω, 5 dB Gain): -96.5 dBu
• Noise (A-weighted, Line/Instr Preamp, 600 Ω, 20 dB Gain): -84.7 dBu
• Common mode rejection (1 kHz) Mic input: < 80 dB
• Common mode rejection (1 kHz) Line input: < 50 dB
• THD+N Ratio (1 kHz), Mic 30 dB Gain: 0.0022 %
• THD+N Ratio (1 kHz), Mic 50 dB Gain: 0.013 %
• THD+N Ratio (1 kHz), Mic 68 dB Gain (Max.): 0.048 %
• THD+N Ratio (1 kHz), Line 0 dB Gain: 0.0022 %
• THD+N Ratio (1 kHz), Line 16 dB Gain: 0.0017 %
• THD+N Ratio (1 kHz), Instr. Unity (100 kΩ Quell-Impedanz): 0.012 %

Internal Linear Power Supply with Shielded Toroidal Transformer
• Operating voltage for analog audio: +/-18 V
• Operating voltage for relays and LEDs: +12 V
• Tubes anode voltage: +250 V
• Tubes heating voltage: +12.6 V
• Phantom power: +48 V

Mains Power Supply
• Mains voltage (selectable): 230 V AC / 50; 115 V AC / 60 Hz
• Fuse for 230 V: T 315 mA
• Fuse for 115 V: T 630 mA
• Power consumption: max. 22.3 VA

Dimensions & Weight
• W x H x D (width x height x depth): 482 x 88 x 237 mm
19 x 3.46 x 9.33 inch
• Unit weight: 6 kg
13.22 lbs
• Shipping weight (incl. packaging): 7.6 kg
15,43 lbs