The Koch JUPITER 50 HEAD: 

Uncompromised Architecture, Total Flexibility

Despite its compact, lightweight chassis, Koch has cut zero corners. The Jupiter Head provides the exact same robust feature set as our main stage workhorse:
Dual-Channel Mastery: Features independent Gain and Volume controls on both channels, allowing you to experience massive clean headroom or crank the "Cool" channel into a sweet, natural vintage-style power-amp growl

  1. Three Foot-Switchable Sounds: Seamlessly transition between Cool (clean), Hot (overdrive), and the high-gain Overdrive Boost.
  2. Built-in Power Dimmer: Scale your output continuously from 45W down to 0W for raw, tube-saturated edge-of-breakup tones at whisper-quiet volumes.
  3. Flexible Routing & Tone Shaping: Fully equipped with a shared 3-band EQ, an instantly recognizable Contour switch (for vintage warmth or scooped modern focus), a front-mounted spring-emulated reverb control, a buffered serial effects loop, and multi-impedance (4, 8, and 16 Ω) speaker outputs.
  4. Silent Practice & Direct Recording: Includes our passive filter speaker-emulated direct output, letting you capture an authentic mic’d-cabinet signal straight to a DAW interface or front-of-house desk with or without a speaker cabinet connected.
Big tone no longer requires a heavy lift. The Koch Jupiter Head offers the perfect blend of portable, lunchbox convenience and uncompromising analog power.

Boutique Hybrid PORTABLE Tone Without Compromise

For guitarists who want the incredible flexibility of a separate head and cabinet setup without the back-breaking weight of a traditional rig, the Koch Jupiter 45 Head is the ultimate solution. Affectionately adopted by players as a highly versatile "lunchbox head," this compact, vintage-styled powerhouse packs the entire feature set and 45-watt architecture of its combo sibling into an ultra-portable format.
Weighing in at a mere 11 kg, it seamlessly brings together the lightweight, high-reliability advantages of solid-state engineering with the unmistakable soul and touch-response of real tubes.

Pure Tube Response on the Move
At the heart of the Jupiter Head is our proprietary ATR (Authentic Tube Response) technology. Driven by a 12AX7 tube in both the preamp and power-amp stages, the high-end MOSFET power section behaves and reacts exactly like a full-tube amp. It delivers that coveted natural compression, organic sag, and dynamic warmth that guitarists demand—whether you are tracking in a bedroom studio or anchoring a loud live stage.

TAke A CLOSER LOOK

2 independent gain / Volume 

With independent Gain and Volume controls on both channels, the Jupiter 45 doesn't just offer massive clean headroom—it lets you crank the Clean channel into that sweet, natural power-amp breakup at any volume.

ATR Athentic Tube Responce

At the heart of the Jupiter Head is our proprietary ATR (Authentic Tube Response) technology. By placing a 12AX7tube in both the preamp and power stage, this hybrid design delivers the organic sag, natural compression, and touch-responsiveness of a full-tube amp at any volume—perfectly blending genuine tube warmth with solid-state reliability.

LIGHTWEIGHT

Weighing in at a mere 11 kg, it seamlessly brings together the lightweight, high-reliability advantages of solid-state engineering with the unmistakable soul and touch-response of real tubes.

SPECIFICATIONS:

Amp configuration 

  1. 50W Hybrid ATR amplifier (ATR = Authentic Tube Response)
  2. 1x 12AX7 tube in the pre-amp
  3. 1x 12AX7 tube in the power amp
  4. High Voltage Mosefet power control
  5. Unique 45Watts amp design with ATR©Technology and dimmer control for tube saturated tube tone at any volume

The TONE

  1. Three foot-switchable channels: Cool (clean), Hot (overdrive) and Hot Gain Boost
  2. Volume control for the Cool channel and separate Gain and Volume controls for the Hot channel
  3. Passive Bass-Mid-Treble tone controls for both channels

Connectivity and OUTPUT

  • Spring emulated reverb with Volume control
  • Dimmer (power Control) for continuous control of the output power between 0W and 20W
  • Buffered serial effects loop
  • Recording output with passive speaker emulation filter
  • Speaker on/off switch for silent recording
  • Extension speaker jack

HARDWARE & HANDLING

​-Two button footswitch (included) with:
* Channel select
*  Gain Boost 

COMBO DIMENSIONS & Weight

  • Dimensions 54,5(w) x 25 (h) x 23.5 (d) cm
  • Weight ca. 11 kg