Koch ST40/C112 Studiotone XL Guitar Amplifier – 40W Class A Combo, 12” Speaker & 3 Channels

The Koch ST40/C112 Studiotone XL is the more powerful brother of the Studiotone 20, and combines authentic Class A tube tone with modern versatility. With 4x EL84 power tubes , 3 preamp tubes (2x 12AX7 + 1x 12AX7LM) and a custom Koch VG12-60 12” speaker, this 40W combo delivers a warm, defined sound, inspired by the iconic British amplifiers of the 60s. Each of the three switchable channels (Clean, Overdrive & Overdrive+) has its own volume control, so you can effortlessly switch between subtle cleans and powerful overdrive with rich tube compression.

Voicing options such as the 2-way Mid Shift and 3-way Bright switch provide additional tonal tailoring, while the rear of the amplifier offers professional features such as a recording out with speaker simulation , effects loop , line outs , headphone out , Power Soak and a speaker on/off switch . With connection options for 4, 8 and 16 Ohm speaker cabinets and an included footswitch, the Studiotone XL is a complete solution for stage, studio and home use.

Specifications:

• Type: Class A tube guitar amplifier combo
• Power: 40 watts
• Output tubes: 4x EL84
• Preamp tubes: 2x 12AX7 + 1x 12AX7LM
• Speaker: 1x 12” Koch VG12-60 (custom designed)
• Channels: 3 (Clean, Overdrive, Overdrive+) – each with its own volume control
• Tone Controls: Passive Bass, Mid, Treble
• Voicing switches:
• Mid Shift (2-way)
• Bright (3-way)
• Reverb: Spring-type (Short Hall tank with 3 springs)
• Effect loop: Serial, -10 dBV
• Recording output with speaker simulation and two voicing filters
• Direct outputs:
• Unfiltered
• Clean channel out
• Headphone out
• Speaker outputs: 4, 8 and 16 Ohms
• Speaker on/off switch
• Power Soak function
• Included: 2-way footswitch (channel select and boost)
• Dimensions: 50 x 28 x 47 cm
• Weight: 22 kg

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