The Koch JUPITER 45 Combo: 

Smart Tools for Stage, Studio, and Home

Beneath its gorgeous boutique exterior, the Jupiter 45 is loaded with modern utilities designed for the working guitarist:

  1. Built-in Power Dimmer: Seamlessly scale your output power continuously from 45W all the way down to 0W. Enjoy cranked-amp, power-stage saturation at whisper-quiet bedroom volumes.
  2. Passive Speaker-Emulated Recording Out: Send a highly convincing, mic'd-cabinet direct signal straight to a DAW interface or front-of-house mixing console.
  3. Speaker On/Off Switch: Easily mute the internal speaker for silent recording sessions or late-night practice.
  1. The Koch VG12-60 Speaker: Loaded with our custom-designed, in-house built 12" VG12-60 driver to ensure a perfectly matched, three-dimensional acoustic response.
  2. Professional Routing: Features a custom-voiced spring-emulated reverb, an extension speaker output, and a fully buffered serial effects loop to keep your pedals sounding pristine.

Weighing in at a highly manageable 19 kg, the Jupiter 45 Combo is a robust, low-maintenance, and incredibly versatile tone machine—ready to command everything from the bedroom studio to the biggest festival stages.

Boutique Hybrid Tone Without Compromise

For players who love vintage-inspired aesthetics but require massive headroom, professional routing, and serious stage volume, the Koch Jupiter 45 Combo is the ultimate 45-watt hybrid powerhouse. Driven by our proprietary ATR (Authentic Tube Response) technology, the Jupiter 45 bridges the gap between pure tube warmth and solid-state reliability. By utilizing 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—delivering natural compression, organic sag, and incredible touch-responsiveness at any volume level.

Dual-Channel Mastery with Cranked-Up Character.

Unlike typical hybrid amplifiers, the Jupiter 45 features independent Gain and Volume controls on both channels, giving you complete control over your saturation and headroom:

  1. Cool (Clean): Delivers a massive, sparkling clean with towering headroom. Thanks to the dedicated controls, you can also crank this channel to push it into a sweet, natural, vintage-style edge-of-breakup bite.
  2. Hot (Overdrive): Serves up a thick, singing overdrive with rich harmonics—perfect for classic rock riffs, blues leads, and modern high-gain crunch when engaging the foot-switchable Boost function.
  3. Contour Switch: Shape your overall character instantly. Toggle between a warm, mid-rich vintage voice or a modern, scooped tone.

TAke A CLOSER LOOK

2 gain / 2 master

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.

POWeR CONTROL / ATR

At the heart of the Jupiter Junior 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.

KoCH VG12 / 60 Speaker

The perfect match for all our amplifiers. Our custom-designed VG12 speakers excel across all musical styles, bridging the gap between tight, punchy lows, colorful mids, and smooth, singing highs.

SPECIFICATIONS:

Amp configuration 

  1. 45W 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. Two sets of independant gain and volume controls
  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 45W
  • Buffered serial effects loop
  • Recording output with passive speaker emulation filter
  • Extension speaker jack
  • 1x 12” Koch VG12-60 speaker

HARDWARE & HANDLING

​-Two button footswitch (included) with:
* Channel select
*  Boost or Reverb on/off
(Selectable on back panel)

COMBO DIMENSIONS & Weight

  • Combo Dimensions 54(w) x 46(h) x 26(d) cm
  • Weight 19.1 kg