Deep-dive buyer's guides to the manufacturers that define high-end audio — model history, certified programs, and what to look for used.
The definitive guide to buying used Wilson Audio. Complete model timeline, Wilson Certified Authentic program deep dive, live listings, sold price comps, and authorized dealers. From WATT/Puppy through Chronosonic XVX.
18 min readBrandThe complete guide to buying used Dan D'Agostino amplifiers — the factory upgrade path, Momentum vs Relentless, and what to inspect.
16 min readBrandBurmester's Berlin electronics heritage, the Servicegedanke factory service program, current lineup across Classic/Top/Reference/Signature lines, and used market patterns.
18 min readBranddCS's Cambridge digital-audio heritage, the Ring DAC architecture, the three-layer support program (free software updates + APEX hardware upgrade + Certified Pre-Owned), current lineup from Lina through Varèse, and used market patterns.
18 min readBrandSonus faber's Vicenza craftsmanship heritage, current lineup from Lumina through Suprema, warranty landscape and De Santi cabinet reality, and used-market patterns for buyers of Italian handcrafted loudspeakers.
18 min readBrandMcIntosh Laboratory's 76-year Binghamton heritage, current lineup by product category (integrateds, tube power amps, solid-state power amps, preamps, digital, turntables, speakers), three-layer service ecosystem, and used-market patterns for buyers of American handcrafted audio electronics.
20 min readBrandOctave Audio's family-owned Karlsbad-Ittersbach heritage since 1968, push-pull pentode engineering and in-house transformers, current lineup, warranty and service through Dynaudio North America, and used-market patterns for buyers of German tube amplification.
18 min readBrandMBL's Radialstrahler omnidirectional loudspeaker technology since 1979, current speaker and electronics lineup, room and setup implications of 360-degree radiation, a five-year transferable warranty, and used-market patterns following the 2025 Chow Tai Seng acquisition.
18 min readBrandCH Precision's Swiss reference-tier engineering since 2009, modular card-cage architecture and cross-generation upgrade paths, owner-adjustable feedback amplification, the 1 Series and 10 Series lineups, and used-market patterns backed by a factory Certified Pre-Owned program.
18 min readBrandNordost's American cable engineering since 1991 — FEP dielectric, Micro Mono-Filament construction, and mechanically-tuned lengths across the Leif through Odin Gold tier ladder — plus the QRT power/grounding/resonance ecosystem, a non-transferable lifetime cable warranty, and a factory Certified Pre-Owned program.
18 min readBrandRockport Technologies' American reference-tier loudspeaker engineering since 1984, founder Andy Payor's DAMSTIF family of hybrid-composite cabinet architectures, the current Atria II through Lyra lineup, and small-batch ownership continuity following the 2019 sale to Josh Clark.
18 min readBrandThe definitive guide to buying used Pass Labs. Threshold-through-current model history, the transferable 3-year warranty explained, factory service in Auburn, the Suncoast "Powered by Pass" program, and what to inspect before buying.
14 min readBrandA complete guide to Audio Research Corporation: founder William Z. Johnson, the SP series and Reference lineage, ownership history through July 2026, a buyer’s framework for used ARC gear, and current model line. Vacuum-tube high-end audio since 1970, hand-built in Maple Grove, Minnesota.
18 min readBrandA complete guide to Clearaudio Electronic GmbH: founder Peter Suchy, the Statement and Master Innovation turntables, TT-series tangential tonearms, Goldfinger Statement cartridge, and a buyer’s framework for used Clearaudio gear. Family-owned German high-end analog, made in Erlangen since 1978.
18 min readBrandA complete guide to TechDAS: founder Hideaki Nishikawa, the Micro Seiki lineage, the Air Force series turntables from V Premium to the flagship Air Force Zero, air-bearing and vacuum-hold-down technology, and a buyer’s framework for used TechDAS gear. Ultra-high-end analog, hand-built in Japan.
18 min readBrandA complete guide to VAC — the Valve Amplification Company: founder Kevin Hayes and father Channing Hayes, the Marantz Classic Series manufacturing history, the patented iQ auto-bias system, the Statement, Master, Signature, and Renaissance product tiers, and a buyer’s framework for used VAC gear. American high-end vacuum-tube electronics, hand-built in Sarasota, Florida since 1990.
18 min readBrandA complete guide to Gryphon Audio Designs: founder Flemming E. Rasmussen, the Head Amp, Antileon, Diablo 300/333, and Apex lineage, the pure Class A zero-negative-feedback design philosophy, and a buyer’s framework for used Gryphon gear. Danish ultra-high-end electronics, hand-built in Ry, Denmark since 1985.
18 min readBrandA complete guide to Accuphase Laboratory: the Kensonic founding story, brothers Nakaichi and Jiro Kasuga, the P-300/C-200/T-100 debut, the AAVA volume control, the 50th anniversary A-300/C-3900/E-5000 flagships, and a buyer’s framework for used Accuphase gear. Japanese ultra-high-end electronics, hand-built in Yokohama since 1973.
18 min readBrandA complete guide to Vitus Audio: founder Hans-Ole Vitus, the eight-year R&D runway before first shipment, the Reference / Signature / Masterpiece three-tier lineup, family succession to Alexander Vitus Mogensen as CEO, and a buyer’s framework for used Vitus gear. Danish ultra-high-end solid-state electronics, hand-built in Herning since 1995.
18 min readBrandA complete guide to VTL: David Manley’s 1980 South African origins, the 1993 split that produced VTL and Manley Labs, Luke Manley and Bea Lam’s Chino, California factory, the Siegfried and Lohengrin flagship monoblocks, and a buyer’s framework for used VTL tube gear.
16 min readBrandA complete guide to Air Tight (A&M Limited): founder Atsushi Miura’s path from Luxman to a 1986 Osaka workshop, the ATM-1 through ATM-3211 tube-amplifier lineage, the My Sonic Lab-engineered PC-1 phono cartridges, and a buyer’s framework for used Air Tight gear. Japanese vacuum-tube electronics, hand-built in Takatsuki since 1986.
16 min read