SPL Channel One MK3 Premium

SPL Channel Strip: The Mk3 Evolution Serving Modern Recording

The Channel One follows SPL's tradition of console channel strips focused on "tracking": an approach where sound is shaped during recording using musical and quick-to-adjust tools. The Mk3 version takes this further by emphasizing analog chain quality and studio flexibility: Lundahl transformers on the mic input and Out 1 output, and an architecture designed to save time during sessions. The result is a channel strip that retains the SPL character while meeting current demands (very present vocals, clear transients, subtle yet effective processing, and better compatibility with hybrid production environments).

Who Is It For and What Studio Uses?

The SPL Channel One Mk3 targets demanding home studio users as well as professional studios seeking a versatile channel strip for vocals, podcasts, guitars (DI), bass, synths, and acoustic instrument recordings. Its strength lies in enabling a quick setup: you set the gain, control sibilance, tame the attack of a percussive source or pick, stabilize dynamics with compression, then finalize with EQ and the Air Band.

It is especially relevant if you want to record while maintaining a comfortable headroom and optionally add a light tube saturation to thicken a vocal or a more pronounced saturation to add grit to a take. Thanks to the ability to connect two microphones simultaneously, it also facilitates mic tests, placement experiments, or source comparisons without interrupting the session.

Integrated Processing: Sculpt, Control, and Finalize Without Multiplying Devices

Preamp: Precision and Character on Demand

The Channel One Mk3 combines a discrete preamp offering up to 68 dB of gain to properly power dynamic or ribbon mics (as needed), and a Tube Saturation section to add harmonics, density, and proximity sensation. A -20 dB pad, phase inversion, and an 80 Hz high-pass filter allow quick adaptation of the channel strip to various situations (proximity effect, rumble, room effect, very strong sources).

Tube Saturation and "Tube Post" Positioning

The Tube Saturation control determines the tube saturation level, from simple thickening to a more pronounced coloration. The Tube Post option is a production asset: it places the saturation after the EQ stage and before the output stage. You can thus choose whether the tube reacts to the raw signal (pre-EQ) or to a sculpted signal (post-EQ), which changes how harmonics build and stabilize in the mix.

De-Esser and Transient Designer: Intelligibility and Impact

The De-Esser offers adjustable "S" reduction, ideal for detailed modern vocals and close-miking. The Transient Designer with Attack and Sustain controls allows immediate envelope editing: you can enhance a guitar's attack, add snap to a snare, or conversely soften an overly aggressive source without heavy compression.

Compression and EQ: Control Dynamics Then Open the High End

The compressor features an adjustable Threshold via the Compression and Make-up Gain controls: a fast, results-oriented approach to stabilize a vocal or keep a bass in place. The EQ offers semi-parametric Low/Mid and Mid/High bands, and especially an Air Band centered at 19,000 Hz to add air, definition, and a "finished" feel without harshness, particularly effective on vocals and acoustic instruments.

Metering and Session Safety

The illuminated VU meter displays input level, output level, and gain reduction, helping to precisely set gain staging and avoid over-processing. For studio integration, the parallel XLR outputs and dedicated Preamp output facilitate backup scenarios, double tracking, or simultaneous sending to different chains (converters, backup recorder, broadcast).

Technical specifications

Category	console slice	Valve	Yes
Number of channels	1	Rack unit	2
EQ	3 channels

Transformers	Lundahl on the microphone inputs and Output Out 1	Tube Post option	tube saturation after the EQ stage and before the output stage
Tube preamp	1 channel with Tube Saturation, De-Esser, Transient Designer, Compressor & EQ	De-Esser	adjustable S reduction
Discrete preamp	68 dB of gain	Transient Designer	Attack and Sustain controls
Microphone connection	2 microphones simultaneously, separately switchable 48 V phantom power	Compressor	adjustable Threshold via the Compression and Make-up Gain controls
Pad	-20 dB	VU meter	illuminated, displaying input level, output level and gain reduction
Phase inversion and high-pass filter	switchable, 80 Hz filter	XLR outputs	2 connected in parallel
Line input	1 on XLR, gain adjustable from -20 dB to +16 dB	Preamp output	1 on XLR, signal taken directly after the preamp, usable simultaneously with outputs 1 and 2
Instrument input	1 on 6.3 mm jack, adjustable from -6 dB to +30 dB	Dimensions	482 x 88 x 210 mm
Tube Saturation	tube saturation level control	Weight	6 kg