Revv Amplification G25 Tube Amp Head With Built In Two Notes Reactive Load

The Revv G25 Tube Head is a compact, stage-ready amplifier that delivers the feel and authority of a full-sized rig in a highly portable format. Built on Revv’s acclaimed Generator platform, it serves up everything from sparkling, articulate cleans to brutally tight high-gain tones, with 25 watts of tube power, modern control options and a built-in Two notes reactive load for effortless silent practice, recording and direct-to-FOH use.

With its dynamic response, larger transformers and integrated Two notes IR technology, the G25 is designed for guitarists who want real valve tone, genuine punch and flexible routing without hauling a massive head and cab to every session. Whether you are tracking at home, playing live on in-ears or pushing a Celestion V30 on stage, the G25 keeps your sound consistent, controlled and inspiring.

Compact Head, Full-Sized Authority

At the heart of the G25 is a 25-watt tube power section driven by 2 x 6V6 valves, chosen for their punchy, responsive feel and musical breakup. Paired with larger transformers, this gives the amp extra headroom, clarity and low-end authority, so your tone stays solid and defined even at higher volumes. It is small enough to carry with one hand, yet easily powerful enough to hold its own in a full band mix.

From Pristine Cleans to Crushing Gain

The G25 is built on the proven Generator platform, delivering a wide tonal spectrum from glassy, articulate cleans to extremely tight, modern high-gain sounds. A 3-band EQ lets you sculpt your core tone, while the built-in boost and noise gate help you tighten up riffs, push leads and keep everything controlled at higher gain settings. Whether you are playing ambient clean parts, classic rock crunch or contemporary metal, the G25 responds with clarity and precision.

Two notes Reactive Load and Virtual Cabs

A built-in reactive load with integrated IR loading powered by Two notes Audio Engineering means you can run the G25 without a speaker connected and still capture authentic cabinet tones. Six virtual cabs are available directly from the amp, letting you send a polished, miked-up sound straight to your audio interface, headphones or front-of-house via the balanced XLR output. Crucially, the reactive load preserves the feel and response of a real amp, so your playing experience remains natural even when you are completely silent on stage or in the studio.

Modern Control and Connectivity

The G25 is designed to integrate seamlessly into modern rigs. Separate master volume controls make it easy to balance levels for different scenarios, while the buffered series FX loop keeps your time-based and modulation effects sounding clear and punchy. Onboard digital reverb adds depth and space, and MIDI input plus USB connectivity open up deeper control and integration options. The included 4-button programmable footswitch lets you access key functions on the fly, so you can focus on playing rather than tap dancing.

• 25-Watt Tube Power with Larger Transformers - A 25-watt 6V6 power section with larger transformers delivers increased headroom, punch and low-end authority. You get the feel and presence of a much bigger amp in a compact head that is easy to transport and set up.
• Built-In Two notes Reactive Load and IRs - The integrated Two notes reactive load and IR loader provide six virtual cabs and a balanced XLR out for silent practice, recording and direct-to-FOH use. Enjoy consistent, miked-up cabinet tones without needing a physical speaker, while retaining the natural response of a real valve amp.
• Generator Platform Tones from Clean to High Gain - Built on the Generator platform, the G25 covers everything from sparkling cleans to extremely tight, high-gain tones. A 3-band EQ, boost and noise gate help you shape and refine your sound for any style, from subtle edge-of-breakup to modern metal.
• Modern Features and Programmable Footswitch - Onboard digital reverb, separate master volumes, a buffered series FX loop, MIDI input and USB connectivity give you deep control over your rig. The included 4-button programmable footswitch puts key functions at your feet, making it easy to switch sounds and manage your setup in real time.

General

• Type: Tube Head
• Platform: Generator-based design
• Channels: Single
• Total Power: 25 W
• Bias: Adjustable Fixed
• Built-in Reactive Load: Two notes Audio Engineering
• Virtual Cabinets: 6

Valves

• Preamp Valves: 2 x 12AX7
• Power Valves: 2 x 6V6

Controls and Features

• EQ: 3-band EQ
• Reverb: Digital
• Effects: Boost
• Noise Gate: Built-in
• Separate Master Volume Controls
• Bias Test Points

Connectivity

• Inputs: 1 x 1/4" (instrument)
• Speaker Output: 1 x 1/4"
• Balanced Line Output: 1 x XLR
• Headphones: 1 x 1/4"
• FX Loop: Buffered, series
• MIDI I/O: MIDI In
• USB: 1 x Type B
• Footswitch: Included, 1 x 5-pin DIN (Boost, Reverb and programmable functions)
• Power Cable: Standard IEC AC cable

Speaker

• Speaker Type: Celestion Vintage 30
• Configuration: 1 x 12"

Construction

• Format: Head
• Enclosure: Fully tolexed headshell

Dimensions

• Height: 48 cm
• Width: 46 cm
• Depth: 25 cm
• Weight: 12 kg