Thus the 't' in SET nearly always refers to triode, not transistor. With tubes, such SE circuits are popular. A single output device per channel couldn't possibly switch on and off. The SET abbreviation for single-ended triode spells out why such circuits must be class A by design. They bypass zero-crossing issues but enforce 10% or lower efficiency. Being always on, class A devices don't switch. Just so, by mid 2015, disproportionately high power draw of about 10 times its rated power even at idle hadn't yet brought down the legislative axe. In this age of growing energy awareness, the inefficiency of class A power conversion seems predestined for outlaw status. Room: Irregularly shaped 9.5 x 10m open floor plan with additional 2nd-floor loft wood-paneled sloping ceiling parquet flooring lots of non-parallel surfaces (pictorial tour here) Sundry accessories: Acoustic System resonators, two Verictum Silver X Block (EMI/RFI traps for component chassis) Power delivery: Vibex Granada/Alhambra on all componentsĮquipment rack: Artesania Audio Exoteryc double-wide 3-tier with optional glass shelves, Krion amp shelf TR-3D subwooferĬables: Complete loom of Zu Event KingRex uArt double-header USB Tombo Trøn S/PDIF van den Hul AES/EBU AudioQuest Diamond glass-fibre Toslink Arkana Research XLR/RCA and speaker cables Loudspeakers: EnigmAcoustics M1, Albedo Audio Aptica, soundkaos Wave 40, Sounddeco Sigma 2 Boenicke Audio W5se, Zu Audio Submission German Physiks HRS-120, Eversound Essence, Gallo Strada II w.

Power & integrated amplifiers: Pass Labs XA30.8, FirstWatt S1, F6 Crayon Audio CFA-1.2 Goldmund Job 225 Gato Audio DIA-250 Aura Note Premier Wyred4Sound mINT April Music Stello S100 MkII, Vinnie Rossi Lio, AURALiC Merak

Preamplifiers: Nagra Jazz, Esoteric C-03, COS Engineering D1, Clones Audio AP1, Vinnie Rossi LIO Sources: 27' iMac with 5K Retina display, 4GHz quad-core engine with 4.4GHz turbo boost, 3TB Fusion Drive, 16GB SDRAM, OSX Yosemite, PureMusic 3.02, Tidal & Qobuz lossless streaming, COS Engineering D1, Metrum Hex, AURALiC Vega, Aqua Hifi La Scala MkII, Fore Audio DAISy 1, Apple iPod Classic 160GB (AIFF), Astell& Kern AK100 modified by Red Wine Audio, Cambridge Audio iD100, Pro-Ject Dock Box S Digital, Pure i20

Diamond dimensions 260