







A used Koch "The Greg" Greg Koch Signature 50-Watt 2x10 Combo Amplifier in excellent condition. Designed in collaboration with renowned guitarist Greg Koch, The Greg combines vintage-inspired tube tone with modern flexibility. Featuring three footswitchable channels, Output Tube Saturation, tube-driven tremolo, spring reverb, and a pair of Jensen speakers, this amp delivers everything from sparkling cleans to rich overdrive and expressive lead tones. Includes the original 5-way footswitch.
Condition: Excellent
Power Output: 50 Watts All-Tube
Preamp Tubes: 6 x 12AX7
Power Tubes: 2 x EL34
Channels: 3 (Clean, Overdrive, Overdrive Boost)
Channel Controls: Separate Drive, Volume, and Passive Bass/Mid/Treble EQ for Clean and Overdrive Channels
OTS (Output Tube Saturation): Footswitchable with Dedicated Drive and Volume Controls
Tremolo: Footswitchable Tube Tremolo with Harmonic and Normal Modes
Tremolo Controls: Speed, Depth, Level
Reverb: Footswitchable Spring Reverb with Long-Scale Reverb Tank
Reverb Controls: Dwell, Tone, Volume
Effects Order: Selectable Reverb → Tremolo or Tremolo → Reverb
Power Modes: Pentode (Full Power) / Triode (Half Power)
Master Controls: Presence, Master Volume
Effects Loop: Buffered Serial or Parallel with Level Control
Recording Output: Passive Speaker-Emulated Recording Output
Extension Speaker Output: Auto-Matching Extension Speaker Jack
Speakers: 2 x 10" Jensen Jet C10-40
Footswitch: 5-Way Footswitch Included
Dimensions: 25.6" (W) x 21.3" (H) x 11.8" (D)
Weight: Approximately 55 lbs. (25 kg)