Koch Twintone 50W 1x12 Combo Tube Amp

This handmade in the Netherlands boutique amp is awesome and loud - A Fender Twin/Deluxe on Steroids! Everything works perfect - I just had it complete overhauled and cleaned - during this process one tube got exchanged for a new one. The Twintone 50W 1x12 Combo Amp is all about tone. Its clean sounds are rich and well defined. Its Accutronics long-can reverb is bright, open, and generously deep. An unusual feature is dual inputs--normal and bright clean. The latter is designed for use with humbucking pickups and automatically trims excessive mids to create a balanced, very pure clean tone. The overdrive channel has dual gain controls and offers everything from clean with edge, to power crunch, and on to all-out pure saturation with infinite sustain. Special features include a solo/rhythm facility with a potentiometer on the back for setting a rhythm level, so you can footswitch between rhythm level and full volume. Another cool feature is a 0, 25, or 50W power soak so you select the appropriate power level and sound loud without being loud. A serial effects loop, recording out, and headphone output enhance this Twintone's versatility. FEATURES 50W tube power 12" speaker 2-channels: clean and overdrive 4x12AX7 and 2xEL34 tubes Serial effects loop Solo/rhythm facility Accutronics spring reverb Built-in power soak: 0, 25, or 50W power output Recording output Headphones output Includes footswitch

  The Twintone is the Netherlands-based Koch Guitar Electronics company’s mid-sized guitar amp, a 1×12″ combo that, like the entire Koch line, uses top-quality components including cold-lacquered transformers, fiberglas-reinforced PC boards, and heavy duty potentiometers.

The Twintone’s all-tube circuit features a matched pair of Ruby EL34s housed in a punched-steel cage (to protect against breakage from loose footswitches or other items that may end up floating around in the back of the amp). The preamp section uses four 12AX7s protected with steel retainer strips. Its 11-ply birch plywood cabinet is covered in thick, black tolex and features cabinet-grade plywood bracing and back panels.

The Twintone’s 12″ speaker is a custom-designed ceramic-magnet Jensen VG12-90 rear-mounted on a presswood baffle. The brushed-aluminum control panel features large, black silkscreen with large knobs that complement the black/silver grillecloth and are easy to read on a dark stage. The overall quality look and vibe of the amp is traditional but still unique enough that you could pick it out of a crowd easily. Front panel controls include volume, bass, mid, and treble for the clean channel; and gain, volume, presence, bass, mid, and treble for the overdrive channel, as well as the power/standby switches and normal/bright clean-input jacks. The second input jack is voiced for guitars with humbucking pickups; it removes some mids and pads the signal slightly. The rear-panel controls consist of a channel switch for going from clean to overdrive channels (if you’re not using the footswitch), a reverb-level knob, series effects loop jacks, record out jack, headphone jack, and rhythm/solo level control. The rhythm/solo control can be pre-set and accessed via the two button footswitch, giving you, in essence, four presets – two for the clean channel and two for the overdrive channel.

At 193/4″ x 181/2″ x 101/2″, the Koch Twintone may be small, physically. But it is huge in terms of features and tone. An amp that truly has both a solid clean and overdrive sound, and outstanding reverb.

Koch TwinTone
Features All-tube circuits, matched Ruby EL34 power tubes, built-in power soak, Accutronics reverb tank, 11-ply birch plywood cabinet, two-button footswitch, independent clean and overdrive channels, independently voiced inputs for single-coil and humbucker pickups, rhythm/solo boost circuit.