Headfirst Alta P1 - 1RU Tube Preamp

This is from the first batch run to the US. Great modded Marshall tones from one of the most reputable amp designers in the business. About 15-20 hours of use in a studio rack.

Preamp details:

Alta P1 - 1RU Tube Preamp 

When Headfirst founder Jason Tong set out to design a new preamp solution for Slipknot’s Jim Root, the brief was simple yet uncompromising: deliver the unmistakable responsiveness and harmonic depth of the Alta100 head, but in a compact, tour-ready format that could run direct to front-of-house without compromise.

The result is the Alta P1 — a three-channel, all-tube preamp that fuses analog warmth with the flexibility of Two notes’ Torpedo Embedded technology. It’s a full-fledged direct-to-DAW/FOH/FRFR rig in a 2.2kg chassis, designed for the modern guitarist who needs the best of both worlds.

Armed with three 12AX7 preamp tubes, MIDI switching, Vintage/Modern voicing, and a Compression control per channel, the Alta P1 delivers an astonishing tonal range:
Channel 1 offers shimmering Fender-style cleans.
Channels 2 and 3 are lifted straight from the revered Alta100, delivering everything from classic crunch to modern high gain.

Beyond its analog core lies the Torpedo Embedded technology — the same digital engine trusted by professionals worldwide. Featuring the EL34 Alta100 tube power amp simulation, full access to DynIR cabinets, plus EQ, Enhancer, Stereo Reverb, Twin Tracker, and Noise Gate, this integrated system redefines hybrid tone shaping.

With stereo XLR outputs, dual FX loops, USB/Bluetooth connectivity, and global compatibility, the Alta P1 stands as a pinnacle of smart design — a preamp that replaces the traditional modeller while retaining every nuance of true tube performance.

Features

3 way bright switch for each of channels 1,2 & 3

Two notes Torpedo Embedded including EL34 Alta100 tube power amp simulation, DynIRs, EQ, Enhancer, Stereo Reverb, Twin Tracker and Noise Gate

Includes 5 x DynIR Headfirst cabinets covering V30s, G12M, Creamback 65s & Creamback 75s

USB and Bluetooth connectivity to Torpedo Remote software by Two Notes
Stereo XLR outputs (with ground lift switch), for direct to DAW, FOH or FRFR

Pre Two Notes (mono) and Post Two Notes (stereo) FX Loops. Both selectable between Line and Instrument level. Plugging into the return of the Pre Loop gives you direct access to the Two Notes back end, for use with other preamp devices, or re-amping etc. The stereo post loop allows you to fully preserve the stereo output from the Torpedo Embedded, adding in your stereo post effects prior to the XLR outs

Line level all analog Direct Out for driving an external power amp and guitar cab

Rear guitar input jack (front input overrides)

1/4″ TRS stereo headphone jack, delivers the same audio signal as the master XLR outputs

MIDI IN and MIDI THRU. MIDI IN socket is 8 pin which delivers 12vdc phantom power. Incoming MIDI signal are routed to both the analog preamp and the Torpedo Embedded

6 position rotary switch selecting Two notes Torpedo Embedded presets

Level control with LED clipping indicator sets the master output level for the stereo post loop, XLRs and headphones

Register the Torpedo Embedded board via the Two notes Torpedo Remote software and automatically receive a complimentary copy of GENOME!

Weighs only 2.2kg (4.8lbs)!  255mm d x 44mm h x 423mm w (483mm /19″ with rack ears)