Equipment Manufacturers
- Alesa Vaic Vacuum Technology (AVVT)
- Antique Sound Laboratory Ltd
- Aprilsound (Custom-built to order)
- Arcadia
- Art Audio
- Audiogenesis
- Audio Note UK
- Audion
- Bel Canto Design
- BWS Tube
- Cary Audio
- DECWARE Zen amp
- Jadis
- J.C. Verdier Labs
- Joule Electra
- KR Enterprises
- Lamm Audio
- Legend Audio Design
- Manley Labs
- Melos Technologies
- Moth Audio
- SAS Audio Labs
- Sun Audio
- WAVAC
- Wavelength Audio
- Welborne Labs
- Wright Sound Company
- Wyetech Labs
- Alon Lotus SE
- Ariel & ME2
- Avantgarde Acoustic
- Audio Note
- Audio Technik (speaker kits featuring Lowther drivers)
- Brentworth Sound Lab
- Coincident Speaker Technology
- Echelon Loudspeakers
- Galante Buckingham
- JMlab
- Klipsch
- Lowther UK
- Lowther America
- Meadowlark Audio
- Merlin Music Systems
- Norh Loudspeaker Co.
- North Creek Music (speaker kits)
- Reference 3A
- Samadhi
- Silverline Audio Technology
- Soliloquy
- Spendor Audio Systems
- Tannoy
- Triangle Electroacoustique
- VAF Research (speaker kits)
- Wavelength Audio (JPO Memorial)
- Wohlklang Giora
Tubes & Supplies
- Angela Instruments
- Antique Electronic Supply
- Aprilsound (High-quality transformers)
- Arn Roatcap, Inc. (High-quality stepped attenuator controls)
- Audio Electronics
- Current Solutions, Inc - Your OEM Power Supply Resource Center
- Digi-Key
- Electra-Print Audio Co
- Electron Valve
- Gold Aero (Tubes)
- Groove Tubes
- Halfin - Electron Tubes OnLine Shopping
- Hammond Manufacturing
- JJ Electronics (Tesla tubes)
- KR Enterprise
- Magnequest (transformers)
- Mouser Electronics
- New Sensor Corporation (Sovtek)
- One Electron (transformers)
- Parts Connection, The
- Parts Express
- Piltron Manufacturing (transformers)
- Reliable Capacitors
- Richardson Electronics (Amperex)
- Ruby Tubes
- Solen Inc.
- Sowter Transformers
- Svetlana
- Triode Electronics
- VAC
- VT52 Home Page
- VT Components
- Western Electric Audio
- Other links