Congleton, Cheshire · UK

Valve Amp
Servicing & Repair

Valve replacement, bias setting, fault diagnosis, and full restoration — for amplifiers of any make or age. Honest work, quoted before we start.

Based in Congleton, Cheshire. We'll look at anything valve-based — guitar or bass, any make, any age. Drop-off and collection by appointment from the workshop.

Our services ↓
Groove Tubes GT-12AX7 preamp valve

01 · Valve Replacement & Biasing

New valves, set right.

A fresh set of valves can transform an amp — but only if they're properly matched and biased. We source quality valves, match them for your amplifier's circuit, and set bias accurately. Your amp sounds the way it was meant to.

Fender amp interior showing PCB and wiring

02 · Fault Diagnosis & Repair

Find it. Fix it.
No surprises.

Noise, hum, low output, cutting out, no signal at all — we trace the fault in any valve or tube amplifier, explain what we've found in plain language, and quote before any repair work begins. If we can't fix it, you don't pay.

Amp power supply capacitor board after restoration

03 · Full Restoration

Back to how it
was built to sound.

Aged electrolytics, out-of-spec components, tired filter caps — over time they all degrade your amplifier's performance. A full restoration replaces everything that matters and brings the amp back to how it should sound.

Real Work

Full recap on a Fender Blues Deluxe Reissue — all electrolytic and filter caps replaced, bias set, soak tested.

What's included.

A full service isn't just a clean and a look-over. It's a systematic inspection of everything — electrical, mechanical and cosmetic — with every check documented and every finding recorded.

Parts are charged at cost on top. You'll always know what's being replaced and why before we proceed.

Every full service includes

  • Full pre-work visual inspection inside and out
  • Electrical safety checks — earth continuity, insulation resistance, fuse ratings
  • ESR testing of all HT filter capacitors
  • Replacement of any capacitors found out of tolerance with quality-branded components
  • Key voltage measurements at all test points referenced against the service manual
  • Bias check and adjustment on output valves
  • Mechanical check — transformers, hardware, tube retainers, speaker connection
  • Full reassembly and torque check
  • Thirty-minute soak test
  • Written service report with all findings, measurements and any deferred items

Valve amplifiers age. The capacitors that smooth and filter your HT voltage drift out of tolerance over time — often long before anything obviously breaks. The result is gradual: a little more hum than there used to be, slightly less headroom, a top end that doesn't quite sit right. You might put it down to your ears, or the room, or the guitar. It's usually the caps. A full service catches that before it becomes a fault. It also catches the loose transformer bolts, the cracked RCA socket, the tube that's on its way out. The things that don't show up until they do.

Full service — labour

£200 £150

Parts at cost. No fix, no fee on fault diagnosis.

How it works
1

Get in touch

Tell us about your amp — make, model, and what it's doing (or not doing). We'll come back to you quickly with an initial assessment.

2

Diagnosis & quote

We assess the amp on the bench and give you a clear, honest quote before any work begins. No surprises, nothing started without your say-so.

3

Repair & return

Work carried out to your approval, fully tested, and returned with a written summary of everything done. Valve amps and tube amplifiers welcome by post — we'll advise on packing.

Full service — labour Sale£200£150
Valve retube & bias set£45
Recap — minimum£45 + parts
Fault diagnosis & repair£45/hr + parts

All prices are indicative — final cost depends on amp size, valve count, and complexity. We always quote before starting work. Parts charged at cost throughout.

No fix, no fee

If we can't fix it,
you don't pay.

Every repair job is covered by our no fix, no fee guarantee. If we can't identify or resolve the fault, you won't be charged for the repair work — always.

Get in touch