What tubes does the Marshall 9005 Rack Valve Slave Power Amp - Ch. B use?

The Marshall 9005 Rack Valve Slave Power Amp - Ch. B uses Solid-state input preamp tubes and 6× EL34 power tubes.

When was the Marshall 9005 Rack Valve Slave Power Amp - Ch. B produced?

The Marshall 9005 Rack Valve Slave Power Amp - Ch. B was produced 1988–2000.

Marshall 9005 Rack Valve Slave Power Amp - Ch. B preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Marshall 9005 is a rack-mounted stereo valve power amplifier delivering 50W per side through six EL34 output tubes, designed to bring genuine valve power amplification to modular rack systems. Unlike the solid-state 8004 and 8008, the 9005 provides the dynamic response, harmonic content, and feel of a real valve output stage when paired with the 9001 or 9004 preamps. Its rack format and professional-level build quality made it a fixture in the elaborate multi-rack stage rigs of touring musicians in the late 1980s and 1990s, offering the tonal character of a valve Marshall head in a convenient 2U format.

Years produced: 1988–2000
Made in: UK
Wattage: 100W
Channels: 2
Preamp tubes: Solid-state input
Power tubes: 6× EL34

Tags: british, crunch.

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.