Koch J45/HB Jupiter Amplifier Head – 45W, 3 Channels, ATR Technology & Reverb

The Koch J45/HB Jupiter is a powerful 45W hybrid amplifier head from the Jupiter Series, designed for guitarists who want to combine the feel and dynamics of a tube amplifier with the reliability of modern technology. Thanks to ATR (Authentic Tube Response), this top-of-the-line amplifier realistically simulates the warm saturation of a real tube power amplifier, regardless of the volume. The J45/HB features 2x 12AX7 tubes in the preamp and delivers a versatile tone via three switchable channels: Clean, Overdrive, and High Gain.

With two independent gain and volume controls, a 3-band EQ with a contour switch, and a built-in spring-type reverb, this top-of-the-line mixer offers everything you need to shape your sound in detail. A buffered effects loop allows for seamless integration of external effects, while the speaker-emulated output with passive filtering allows for direct recording or sending to a PA. The included 2-button footswitch makes on-stage operation simple and reliable.

Specifications:

• Type: Hybrid guitar amplifier head
• Power: 45 watts
• Technology: ATR (Authentic Tube Response)
• Tubes: 2x 12AX7 (preamp + poweramp simulation)
• Channels: 3 (Clean, Overdrive, High-Gain) – switchable via footswitch
• Regulations:
• 2x Gain & Volume
• 3-band EQ with contour switch
• Reverb: Spring-type, controllable on front panel
• Dimmer: Stepless control of output power
• Effect loop: Buffered
• Speaker outputs: 4, 8 and 16 Ohms
• Speaker-emulated output with passive filter
• Included: 2-way footswitch (channel select + boost/reverb)
• Weight: 11 kg

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