Resource
Pass DIY
Pass DIY archive providing articles, files, historical schematics, amplifier projects, and a crossover simulator.
- Resource ID
- pass-diy
- Type
- diy
- Region
- Online
- Country
- Online
- Categories
- Verification status
- verified
- Verified at
- 2026-08-23T09:40:44-07:00
- class-a
- amplifiers
- schematics
- projects
Verification sources
Related resources
Analogue Seduction
dealer
Whittlesey, UK dealer focused on two-channel and home-cinema equipment, including amplifiers, cartridges, DACs, streamers, speakers, turntables, and vinyl.
- Region
- Europe
- Country
- GB
- uk-dealer
- turntables
- vinyl
- home-cinema
Sources
Audio Classics
dealer
Vestal, New York dealer listing new and used stereo equipment, buy/trade services, modifications, and equipment service.
- Region
- North America
- Country
- US
- new-used
- vintage-audio
- trade-in
- tube-amplifiers
Sources
Audiowright Shop
repair
Columbus, Ohio repair shop servicing vintage and audiophile equipment including amplifiers, turntables, receivers, and tape decks.
- Region
- North America
- Country
- US
- repair
- restoration
- vintage-audio
diyAudio
diy
DIY audio community with forums for amplifiers, sources, loudspeakers, design and build projects, and a marketplace.
- Region
- Online
- Country
- Online
- diy
- design-build
- loudspeakers
Sources
Elliott Sound Products
diy
Australian DIY audio and electronics site with project articles and PCBs for amplifiers, preamps, crossovers, speakers, subwoofers, and test equipment.
- Region
- Australia
- Country
- AU
- schematics
- pcbs
- amplifiers
- crossovers
Sources
Galen Carol Audio
dealer
San Antonio retailer listing speakers, amplifiers, turntables, phono products, digital sources, and audio setup articles.
- Region
- North America
- Country
- US
- hi-fi-retailer
- turntables
- phono
- audio-guides
Sources
Hegel
manufacturer
Norwegian audio electronics maker whose official catalogue includes integrated, pre, and power amplifiers alongside digital and phono products.
- Region
- Europe
- Country
- NO
- integrated-amplifiers
- dacs
- cd-players
Sources
High End Audio Repair
repair
Brooklyn, New York service business listing repairs and custom work for amplifiers, DACs, turntables, and other high-end components.
- Region
- North America
- Country
- US
- authorized-service
- repairs
- upgrades
Sources
Just Audio HiFi
repair
Maryland audio retailer and service center offering mail-in repair for vintage and contemporary hi-fi components alongside new and pre-owned equipment.
- Region
- North America
- Country
- US
- vintage-repair
- mail-in-repair
- turntables
- pre-owned
Sources
Linkwitz Lab
diy
Loudspeaker-design resource covering active and dipole systems, crossover electronics, room acoustics, measurement, and build projects.
- Region
- Online
- Country
- Online
- loudspeaker-design
- active-speakers
- dipole
- open-baffle
Sources
McIntosh
manufacturer
US home-audio maker with amplifiers, preamplifiers, streaming products, turntables, and other system components.
- Region
- North America
- Country
- US
- amplifiers
- preamplifiers
- streaming
Sources
NAD Electronics
manufacturer
Audio electronics brand whose site lists integrated and streaming amplifiers, home-theater products, and source components.
- Region
- North America
- Country
- CA
- integrated-amplifiers
- streaming
- home-theater
Sources
Parts Express
dealer
Supplier of speaker components, electronic parts, tools, audio equipment, DIY kits, and project resources.
- Region
- North America
- Country
- US
- speaker-components
- tools
- build-kits
- repair-parts
Sources
Pass Labs
manufacturer
US audio manufacturer whose official catalogue covers Class A and Class AB amplifiers, preamplifiers, and headphone amplification.
- Region
- North America
- Country
- US
- class-a
- class-ab
- power-amplifiers
Peter Tyson
dealer
UK retailer listing hi-fi separates, loudspeakers, amplification, DACs, streamers, turntables, pre-owned equipment, and installation services.
- Region
- Europe
- Country
- GB
- uk-retailer
- turntables
- streamers
- installation
Sources
Rega
manufacturer
English hi-fi company whose site presents turntables, CD players, DACs, amplifiers, and related support information.
- Region
- Europe
- Country
- GB
- turntables
- cd-players
- integrated-amplifiers
Sources
Richer Sounds
dealer
UK retailer listing amplifiers, CD players, DACs, wireless streaming components, tuners, turntables, speakers, and hi-fi accessories.
- Region
- Europe
- Country
- GB
- uk-retailer
- hi-fi-separates
- experience-rooms
- repair-service
Sources
Sevenoaks Sound & Vision
dealer
UK independent hi-fi and home-cinema retailer established in 1972, with stores, ecommerce, trade-in, and design and installation services.
- Region
- Europe
- Country
- GB
- uk-retailer
- hi-fi-separates
- installation
- trade-in
Sources
Stereo Lab
repair
Columbus, Ohio repair and restoration shop servicing vintage turntables, receivers, amplifiers, tape decks, tube radios, console stereos, and speakers.
- Region
- North America
- Country
- US
- vintage-repair
- turntables
- tube-radio
- speaker-refoam
Sources
The Absolute Sound
publication
Audio publication website with reviews, features, and commentary on high-performance audio and music.
- Region
- North America
- Country
- US
- reviews
- features
- high-performance-audio
Sources
The Music Room
marketplace
Used-audio retailer and consignment platform that buys, sells, and trades equipment and describes testing and certified pre-owned procedures.
- Region
- North America
- Country
- US
- used-audio
- consignment
- certified-pre-owned
- trade-in
Sources
Upscale Audio
dealer
Retailer of hi-fi components, tubes, turntables, headphones, and open-stock or outlet equipment.
- Region
- North America
- Country
- US
- tubes
- turntables
- open-stock
- hi-fi-retailer