Precision electronics repair & handbuilt tube amplifiers
Point-to-point wiring. Vintage restoration. Custom circuit design. Every build treated with the care of a one-of-a-kind instrument.
Get in touchServices
From diagnosing a blown capacitor to designing a full amplifier from scratch — if it has a circuit, we work on it.
Small Electronics Repair
Component-level diagnostics and repair for consumer electronics, audio equipment, vintage radios, and more. We fix what others say is unfixable.
Tube Amplifier Builds
Custom hi-fi tube amplifiers — push-pull, single-ended triode, preamps. Point-to-point wired with premium components and matched tubes.
Vintage Restoration
Full teardown and restoration of vintage receivers, turntables, and audio gear. Replaced capacitors, cleaned contacts, brought back to spec.
Custom PCB Design
From schematic to fabrication-ready Gerbers in KiCad. Audio preamps, power supplies, control circuits — designed and prototyped locally.
Diagnostics & Consulting
Not sure what's wrong? Bring it in for a bench diagnosis. We'll trace the fault, explain what we find, and give you an honest estimate.
Turntable Service
Cartridge alignment, motor calibration, tonearm setup, and full mechanical restoration. Get your records sounding their best.
From the Bench
A few recent projects — amplifier builds, restorations, and custom designs.
Our Process
Whether it's a repair or a custom build, every project follows the same deliberate approach.
Assessment
Bring your equipment in or describe your build. We'll examine it on the bench, identify the issue or discuss your design goals, and give you a clear estimate.
Plan
For repairs: a detailed diagnosis with photos. For builds: schematic review, component sourcing, and a timeline. No surprises.
Build & Test
Careful, methodical work. Every solder joint inspected. Every circuit tested under load. Voltage checks at every stage.
Deliver
Your equipment returned with documentation — what was done, what was replaced, and how to maintain it. Builds include full schematics.
Built by hand, tested by ear
Retro Engineering is a one-person shop in Albuquerque, New Mexico, specializing in the kind of work that takes patience, steady hands, and a genuine love for the craft.
From designing hi-fi amplifiers around classic tubes like the 6L6GC and 6B4G, to diagnosing and repairing vintage audio gear that other shops won't touch — this is detailed, component-level work done right.
Every build uses quality iron, hand-selected tubes, and point-to-point wiring. Every repair gets a full bench diagnosis before a quote. No shortcuts.
Start a project
Have something that needs fixing, or want to discuss a custom build? Reach out — happy to talk shop.
Location
Albuquerque, New Mexico
Turnaround
Repairs: typically 3–7 days
Custom builds: quoted per project
Warranty
All repairs and builds come with a 90-day workmanship guarantee