Carvin MC2800 / PB250 Bi-Channel - Channel 1 preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This 1979 Carvin bi-channel amplifier pairs a solid-state preamp with a choice of power amps. Each of the two op-amp channels has its own sustain/normal switch, master volume, spring-reverb send and seven-band graphic EQ (60 Hz to 6 kHz), with footswitchable channels and reverb. The MC2800 version drives four output valves in push-pull from a dual-triode driver; the PB250 version uses a transistor power amp rated 125 or 250 watts.

• Made in: USA
• Wattage: 100W
• Channels: 2

Tags: american, vintage, hybrid, two-channel.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.