Koch Classictone II Combo 20

A Classictone designed as a "real" musician's amp

The KOCH Classictone II follows the tradition of all-tube guitar amps with a vintage character, designed for reliability and ease of use. The concept is clear: deliver an inspiring sound, immediate controls, and solid construction to support rehearsals, studio sessions, and gigs for years. Within the range, it positions itself as a versatile "roots" amp: lively clean, organic overdrive, and just enough modern features to fit into a current rig.

Who is the Classictone II 20W for?

With its 20W all-tube power, the Classictone II targets guitarists who want a characterful amp without relying on modeling: blues, classic rock, indie, pop, funk, country, and all styles where guitar volume and pick attack are key. It suits both intermediate players seeking a first "real" high-end amp and experienced guitarists looking for a compact combo/head for rehearsing, recording, and touring. The three master volume settings "Home / Studio / Stage" allow adapting the headroom and feel under the fingers depending on the context, without losing the amp's identity.

Channels, controls and features: the essentials plus the right extras

The preamp offers two vintage-voiced channels: Clean for full, responsive clean tones, and Overdrive for gradually thickening crunch. A dedicated Boost on the Overdrive adds a third, more biting voice for solos and heavier riffs. The 3-band passive EQ works like the classics: musical, effective, and ideal for sculpting the mids to find your place in a mix.

On the integration side, the serial effects loop facilitates the use of delay and reverb pedals, and the balanced recording output with speaker simulation allows capturing a coherent sound quickly, handy for home studios or direct recording. Finally, the spring reverb adds the expected space and depth typical of amps in this family, from a subtle halo to light surf vibes depending on your settings.

The sound

The Classictone II is an all-tube Class A amp based on EL84 tubes, a recipe known for its singing quality, natural compression, and harmonics that "bloom" as you push the power stage. The clean remains lively and detailed, with great response to nuances (right hand, guitar volume, single-coils or humbuckers). In crunch, you get a very organic vintage grain, with present mids and a top end that retains definition. In overdrive, the saturation stays musical and articulate: perfect for punchy rock, expressive leads, and rhythms that remain clear even when played hard.

Technical specifications

Effects	Reverb, Looper, Cabinet Simulator	Number of channels	2
Category	Guitar combo	Speaker diameter	12"
Technology	Tubes	Number of speakers	1
Effects loop	Yes	EQ	3 channels
Amp tubes	EL84	Color	Black
Pre-amp tubes	3 x 12AX7	Finishing	Black tolex
Category	Amplifier	Power output	20 W

Type	all-tube guitar amp	Reverb	spring reverb
Class	Class A	Simulation	speaker simulation (on recording output)
Power	20 Watts	Recording output	balanced with speaker simulation
Master volume settings	Home, Studio, Stage	Speaker outputs	4, 8, and 16 Ohms with on/off selector
Available formats	head or combo	Configuration	1x 12 inch
Also available in	40 Watts version	Model	Koch Custom Design VG12-60
Power tubes	EL84	Combo	66.5 x 26.5 x 49.5 cm (W x D x H); 22.6 / 23.7 kg (depending on version)
Preamp tubes	3x 12AX7	Head	52.5 x 26.5 x 31 cm (W x D x H); 13.5 / 14.5 kg (depending on version)
Channels	Clean, Overdrive, Overdrive Boost	2-channel footswitch included	FS-2.2