Solid-State

Anedio A1 amplifier PFO Issue 53
Alternate Audio CA35 single-ended amplifier aM
ATC SIA 150 amplifier PFO Issue 16
ATC SPA2 200P amplifier PFO Issue 4
Audio Crafters Guild 1000 monoblock amplifiers PFO Issue 34
Audio Magic Stealth 250 monoblock amplifiers PFO Issue 15
BAT VK-600 SE amplifier PFO Issue 23 and Issue 25
Bel Canto eVo2 monoblock amplifiers aM
Bel Canto e.One M300 amplifiers PFO Issue 26
Bel Canto e.One Ref 1000 amplifiers PFO Issue 38
Bel Canto e.One Ref 1000 MkII amplifiers PFO Issue 43
Bel Canto REF500M amplifiers PFO Issue 50
Bel Canto REF500m PFO Issue 53
Birdland Audio Pleyel 250 amplifier aM
Blue Circle SBM monoblock amplifiers PFO Issue 34
Boulder 2000 Series stereo amplifier PFO Issue 27
Bryston 4B SST amplifier PFO Issue 37
Bryston 28B SST amplifiers PFO Issue 44
Burson Audio the Burson Buffer Amplifier PFO Issue 30
Channel Islands Audio VMB-1 monoblock amplifiers PFO Issue 18
Channel Islands Audio D200 LGX V Class D amplifiers PFO Issue 22
Channel Islands Audio D-200 MkII Amplifiers PFO Issue 57
Clayton Audio S40 stereo amplifier aM
Clayton Audio M70 monoblock amplifiers aM
Clayton Audio M-200 Class-A monoblock amplifiers PFO Issue 33
Clayton Audio S40 Class-A amplifier PFO Issue 34
Clayton Audio M-300 amplifiers PFO Issue 40
Clayton Audio M-300 amplifiers PFO Issue 42
Coda Continuum 12.5 and 30.5 amplifiers PFO Issue 13
Edge Amps G8m monoblock amplifiers PFO Issue 24
Edge Electronics G4 amplifier PFO Issue 14
Emotiva UPA-2 Amplifier PFO Issue 58
Emotiva XPA-2 Amplifier PFO Issue 58
Final Labs Music 6 amplifier PFO Issue 1
First Watt F1 amplifier PFO Issue 17
Flying Mole DAD-M100 monoblock amplifiers PFO Issue 17
Harmonic Technology Photon AmpliCables by Inex Innovation PFO Issue 32
Herron Audio M1 Amplifiers PFO Issue 58
H2O Audio S250 amplifier PFO Issue 24
Ideal Innovations Elite 80+ amplifier PFO Issue 41
KingRex T-20 integrated amplifier and psu PFO Issue 46
Kharma Matrix MP150 monoblock amplifiers PFO Issue 25
Luminance Audio KST-150 amplifier PFO Issue 25
Luxman M-600A amplifier PFO Issue 35
Majeel Laboratories Pristine SA10 amplifier PFO Issue 2
Marantz Reference MA-9S2 monoblock amplifiers PFO Issue 38
Marantz MA-9S2 amplifiers PFO Issue 44
Marantz MM8003 Amplifier PFO Issue 57
Mark Levinson 33H monoblock amplifiers PFO Issue 18
Marsh Sound Design A200s amplifier PFO Issue 3
Marsh Sound Design A450M monoblock amplifiers PFO Issue 3
mbl 8011AM monoblock amplifiers PFO Issue 30
McIntosh MC352 amplifier PFO Issue 1
McIntosh Mc501 amplifiers PFO Issue 46
Monarchy Audio SM-70 Pro monoblock amplifiers PFO Issue 2
Musical Design DM-100B amplifier aM
Nomad Audio Niagara amplifier PFO Issue 33
NuForce Reference 9 monoblock amplifiers PFO Issue 22
Nuforce Reference 9.02 monoblock amplifiers PFO Issue 23
Nuforce Reference 8B monoblock amplifiers PFO Issue 24
NuForce Reference 9.02 monoblock amplifiers PFO Issue 26
NuForce Reference 9 SE monoblock amplifiers PFO Issue 26
NuForce Reference 9 SE monoblock amplifiers PFO Issue 27
NuForce Reference 9V2 (Version 2) amplifier upgrade PFO Issue 33
Parasound HCA-1500A amplifier PFO Issue 4
Pass Laboratories X250 amplifier PFO Issue 4 and PFO Issue 6
Pass Labs X350.5 Amplifier PFO Issue 52
Pass Labs XA60.5 Amplifiers PFO Issue 52
PS Audio HCA-2 amplifier PFO Issue 9
PS Audio GCA 100 amplifier PFO Issue 24
Red Dragon Audio Leviathan monoblock amplifiers PFO Issue 30
Red Dragon Audio Leviathan monoblock amplifiers PFO Issue 32
Red Dragon Audio Leviathan monoblock amplifiers PFO Issue 41
Red Planet Labs STR201 amplifier PFO Issue 12
Red Wine Audio Clari-T-Amp amplifier PFO Issue 18
Red Wine Audio Clari-T-Amp amplifier PFO Issue 22
Silicon Arts Design ZL-120 amplifiers PFO Issue 42
Silicon Arts Next Class Si2 Micro Integration Line PFO Issue 48
Simaudio Moon W-3 amplifier PFO Issue 3
Soaring Audio SLC-A300 amplifier PFO Issue 13
Soulution 710 Stereo Amplifier PFO Issue 47
Spectron Audio Musician III Mk. 2 amplifiers PFO Issue 44
Spread Spectrum Technologies Son of Ampzilla 2000 PFO Issue 19 and PFO Issue 20
Valvet A3.5 amplifiers PFO Issue 48
Van den Hul Array S-1 amplifier PFO Issue 4
Wyred 4 Sound ST 500 amplifier PFO Issue 39
XLH Reference M-2000 monoblock amplifiers PFO Issue 24

Tube

Acoustic Masterpiece M-101 single-ended amplifier aM
AcousticPlan Santor amplifier PFO Issue 23
Air Tight ATM-211 monoblock amplifiers PFO Issue 22
Almarro A340 amplifiers PFO Issue 45
Aria Audio WT100 XL LS stereo amplifier PFO Issue 4 and PFO Issue 6
Art Audio Jota high current monoblock amplifier PFO Issue 23
Art Audio Quartet monoblock amplifiers PFO Issue 31
Art Audio Carissa amplifier PFO Issue 12
Arte Forma 2A3 SET amplifier PFO Issue 47
Audio Electronic Supply Sixpac monoblock amplifiers PFO Issue 6
Audio Electronic Supply Sixpac monoblock amplifiers PFO Issue 22
Audio Research VT100MKIII amplifier PFO Issue 14
Audio Space 6M-KT88 monoblock amplifiers PFO Issue 24
Audio Space 6M-2A3PP monoblock amplifiers PFO Issue 35
Blue Circle Audio BC6 single-ended tube-hybrid amplifier aM
Canary Audio CA-330 amplifiers PFO Issue 38
Cary Audio SLI-80 integrated amplifier PFO Issue 24
Cary Audio Rocket 88 amplifier PFO Issue 6
Cary Audio 211 Anniversary Edition monoblock amplifiers PFO Issue 11
Cary Audio CAD-805 Anniversary Edition Class A Triode monoblock amplifiers PFO Issue 19
Cary Audio CAD 45SE triode monoblock amplifiers PFO Issue 28
Chalice Audio Grail SET amplifiers PFO Issue 36
Comback Reimyo PAT-777 amplifier PFO Issue 19
David Berning ZH270 amplifier PFO Issue 5
Decware ZEN 84B SET amplifier PFO Issue 2
deHavilland 845 Aries monoblock amplifiers PFO Issue 2
deHavilland 845-G monoblock amplifiers PFO Issue 12
deHavilland Ios 845 amplifier PFO Issue 28
E.A.R./Yoshino 890 amplifier PFO Issue 9
E.A.R. 890 monoblock amplifiers PFO Issue 27
E.A.R. 534 amplifier PFO Issue 40
Eastern Electric M-156 amplifiers PFO Issue 37
Fi X 2A3 amplifier PFO Issue 36
Hagerman Technology Cymbal monoblock amplifiers PFO Issue 21
Jolida JD 3000A amplifiers PFO Issue 46
Joule Electra Stargate amplifiers (plus an interview with Judd Barber) PFO Issue 1
Joule Electra VZN-100 Mk. III Marquis monoblock amplifiers PFO Issue 6
JWN Amplifier PFO Issue 58
Kora Titan tube monoblock amplifiers aM
Korato Anniversary amplifier PFO Issue 44
KR Audio Kronzilla DM amplifiers PFO Issue 28
LA Audio the P-22 amplifiers PFO Issue 30
Lamm Industries ML1.1 monoblock amplifiers, Part 1 PFO Issue 15
Lamm Industries M1.2 Hybrid monoblock amplifiers PFO Issue 24
Lamm Industries M1.2 monoblock amplifiers PFO Issue 34
Luxman MQ-88 amplifier PFO Issue 35
Luxman L-550A MkII integrated PFO Issue 43
Manley Snapper monoblock amplifiers PFO Issue 5
Manley Mahi amplifiers PFO Issue 25
Manley Snapper monoblock amplifiers PFO Issue 44
Margules U280SC amplifier PFO Issue 48
Naked Truth Audio Calla OTL monoblock amplifiers aM
Navison Audio NVS-211 amplifiers PFO Issue 31
Navison Audio NVS 572 amplifiers PFO Issue 32
Navison Audio NVS-003G OTL amplifiers PFO Issue 34
Opera Audio Consonance Cyber 800 amplifiers PFO Issue 34
Opera Audio Consonance Cyber 845 amplifiers PFO Issue 38
Rogue Audio M-150 monoblock amplifiers PFO Issue 36
Rogue Audio Atlas amplifier PFO Issue 39
Rogue Audio M-180 amplifiers PFO Issue 53
Sophia Electric Model 91-01 300B SET amplifiers PFO Issue 53
Sound Master No. 34.2 Stereo Amplifier PFO Issue 49
Sound Quest SQ-84 amplifier PFO Issue 26
Tenor 175S Stereo Amplifier PFO Issue 58
Ultra Fi Monaco 845 SET stereo amplifier PFO Issue 32
VAC Auricle Musicbloc amplifiers PFO Issue 26
WAVAC HE-833 SET monoblock amplifiers PFO Issue 9
WAVAC MD-811 amplifier PFO Issue 1
WAVAC HE-833 v1.3 monoblock amplifiers PFO Issue 21
WAVAC Audio Labs MD-805MkII 10th Anniversary Edition amplifiers PFO Issue 54
Welborne Apollo 1.5 SET monoblock amplifiers aM
Wolcott Audio P280-S amplifier PFO Issue 25
Wyetech Labs Onyx monoblock amplifiers PFO Issue 21

Solid-State Integrated

Accustic Arts Power 1 integrated amplifier PFO Issue 16
Arcam FMJ A-38 integrated amplifier PFO Issue 41
Audia Flight FL 3 integrated amplifier PFO Issue 45
Audioengine N22 Premium Desktop Audio Amplifier PFO Issue 52
Audio Crafters Guild 1000 control amplifier PFO Issue 37
Audio Zone Amp-1 integrated amplifier PFO Issue 18
Aura Note All-In-One Music Center integrated amplifier PFO Issue 40
Bel Canto C5i Integrated PFO Issue 55
Berendsen IPA-80 integrated amplifier PFO Issue 17
Bladelius Design Group Thor integrated amplifier PFO Issue 20
Blue Circle FtTH integrated amplifier PFO Issue 26
Blue Circle DAR integrated amplifier PFO Issue 44
Cambridge Audio Azur 340A integrated amplifier PFO Issue 21
Cary Audio Concept Series CAI 1 integrated PFO Issue 31
Coda Continuum Unison integrated amplifier PFO Issue 9
Dussun integrated amplifiers PFO Issue 24
Edge Electronics G3 integrated amplifier PFO Issue 20
47 Laboratory 50-watt Gaincard integrated amplifier PFO Issue 1
GamuT D3i integrated amplifier PFO Issue 45
Gryphon Callisto 2100 integrated amplifier PFO Issue 1
Hegel Music Systems H100 integrated amplifier PFO Issue 46
Lavardin Technologies Model IT integrated amplifier PFO Issue 36
Lavardin Technologies Model IT integrated amplifier PFO Issue 46
Magnum Dynalab MD-308 integrated amplifier PFO Issue 1
Marantz PM-11S1 Reference Series integrated amplifier PFO Issue 28
Marantz KI Pearl PFO Issue 52
Musical Fidelity X-150 integrated amplifier PFO Issue 19
NAD C370 integrated amplifier PFO Issue 4
NAIM Nait 5.0 integrated amplifier PFO Issue 3
NAIM Nait 5i integrated amplifier PFO Issue 18
NuForce Icon integrated PFO Issue 41
Parasound Zamp v.3 PFO Issue 42
Pass Labs INT-150 integrated PFO Issue 40
Pass Labs INT-150 and INT-30A Integrated Amplifiers PFO Issue 58
Plinius 9100 integrated PFO Issue 19
PS Audio GCC integrated amplifier PFO Issue 20
Rega Brio 3 integrated amplifier PFO Issue 28
Simaudio Moon I-5 integrated amplifier aM
Tonewin VK2100M integrated amplifier PFO Issue 34
Virtue Audio TWO integrated amplifier PFO Issue 40
Virtue Audio TWO integrated amplifier PFO Issue 41
Virtue Audio ONE integrated amplifier PFO Issue 43
Virtue Audio Sensation M901 integrated amplifier PFO Issue 50
Virtue Audio Virtue TWO.2 integrated amplifier PFO Issue 50
Wyred 4 Sound STI-500 integrated amplifier PFO Issue 48
YBA Passion Intégré integrated amplifier PFO Issue 3

Tube Integrated

Acoustic Masterpiece AM-201 integrated amplifier PFO Issue 8
Almarro A318B integrated amplifier PFO Issue 24
Antique Sound Labs AQ1001DT integrated amplifier PFO Issue 1 and PFO Issue 17
Arte Forma I-150 Integrated Amplifier PFO Issue 53
ASR Emitter 1 Exclusive B integrated amplifier PFO Issue 36
Audio Space 3i EL-34 integrated amplifier PFO Issue 27
Audion Silver Night 300B integrated amplifier PFO Issue 2
Ayon Audio Spirit integrated amplifier PFO Issue 37
Ayon Audio Triton integrated amplifier PFO Issue 50
Blue Circle Audio NSCS integrated amplifier PFO Issue 21
Bluenote Audio Demidoff Signature integrated amplifier PFO Issue 36
Cary Audio SLI-80 Integrated Amplifier PFO Issue 54
Conrad-Johnson CA200 Control Amplifier PFO Issue 32
Dared Tube MP 5 integrated amplifier PFO Issue 24
Dayens Ecstasy Integrated Amplifier PFO Issue 58
DK Designs VS-1 MK 2 integrated amplifier PFO Issue 15
E.A.R./Yoshino 834 integrated amplifier aM
Eastern Electric M520 integrated and MiniMax phonostage PFO Issue 22
EKCO Audio EV55SE Integrated Amplifier PFO Issue 56
Elekit TU-879S integrated amplifier PFO Issue 45
Firestone Audio Big Joe power amplifier PFO Issue 22
GW Labs Cyclops integrated amplifier PFO Issue 9
Grant Fidelity A-348 integrated amplifier PFO Issue 39
Grant Fidelity A-534B integrated amplifier PFO Issue 41
Jasmine Audio the Piano EL-34 integrated PFO Issue 23
Jolida JD 1000RC integrated amplifier PFO Issue 50
Jungson JA-88E integrated amplifier PFO Issue 47
Kora Explorer 90SI integrated amplifier PFO Issue 3
LA Audio A-60R Integrated Amplifier PFO Issue 52
LSA Statement hybrid integrated amplifier PFO Issue 35
Margules Audio ACRH 1.2 integrated amplifier PFO Issue 15
Ming Da MC34AB integrated amplifier PFO Issue 28
MiniWatt amplifier PFO Issue 46
Mystere ia11 integrated amplifier PFO Issue 47
Nightingale Armonia integrated amplifier PFO Issue 9
Omaha Audio OD-300B SET integrated amplifier PFO Issue 34
Onix H34 integrated amplifier PFO Issue 15
Onix A-120MkII integrated amplifier PFO Issue 20
Pathos Acoustics Logos integrated PFO Issue 22
Pathos Acoustics Logos integrated PFO Issue 23
Peachtree Audio iDecco integrated PFO Issue 48
PrimaLuna ProLogue Two integrated amplifier PFO Issue 18
PrimaLuna DiaLogue One integrated amplifier PFO Issue 36
Qinpu A-8000 Mk II integrated amplifier PFO Issue 27
Rogue Audio Cronos integrated amplifier PFO Issue 21
Rogue Audio Tempest II integrated PFO Issue 25
Shanling STP-80 integrated amplifier PFO Issue 15
Shengya A-216 hybrid integrated amplifier PFO Issue 42
Sophia Electric Baby integrated amplifier PFO Issue 8
Sound Quest SQ-88 integrated amplifier PFO Issue 30
Sound Quest KT-88 integrated amplifier PFO Issue 32
Tecon Audio 55 integrated PFO Issue 35
Tektron TK 211S integrated amplifier PFO Issue 36
Tokyo Sound Company Sound SE100 integrated amplifier PFO Issue 18
Tokyo Sound Company Sound SE 300 integrated amplifier PFO Issue 21
Trafomatic Audio Experience Two integrated amplifier PFO Issue 39
Triode Audio Corporation TRX-PM84 PFO Issue 56
Vista Audio i84 integrated amplifier PFO Issue 30
Xindak XA6900SE integrated amplifier PFO Issue 12

Headphone Amplifiers

ALO Audio/Red Wine Audio PFO Issue 49
Audio Valve RKV Mark II headphone amplifier PFO Issue 15
Cary Audio Xciter Integrated Tube Headphone Amplifier PFO Issue 53
Centrance DACPort PFO Issue 47
E.A.R. HP 4 Headphone Amplifier PFO Issue 51
Gilmore Lite headphone amplifier PFO Issue 21
Grado headphone amplifier with Sennheiser and Grado 'Phones PFO Issue 20
Headroom Total BitHead headphone amplifier PFO Issue 14
Headroom Max and Little headphone amplifiers PFO Issue 5
Headroom BlockHead headphone amplifier with Sennheiser and Grado 'Phones PFO Issue 20
Headroom New Micro-Stack PFO Issue 22
Headroom Millet hybrid headphone amplifier PFO Issue 23
HeadRoom the Desktop Balanced amplifier PFO Issue 30
HeadRoom's Bi-Amped Audiophile Desktop Package PFO Issue 46
HeadRoom's "Special" A New Portable Desktop Amplifier PFO Issue 41
KingRex HQ-1 Headquarter Desktop headphone amplifier PFO Issue 46
KingRex HQ-1 Headquarter Desktop headphone amplifier PFO Issue 54
Meier Audio Corda HA-1 headphone amplifier PFO Issue 9
Meier Audio Corda HA-2 headphone amplifier PFO Issue 10
Opera Audio Consonance Cyber 20 headphone amplifier PFO Issue 11
Ray Samuels Audio HR-2 headphone amplifier PFO Issue 7
Ray Samuels Audio XP-7 headphone amplifier PFO Issue 11
Ray Samuels Audio Emmeline Hornet PFO Issue 29
Ray Samuels Protector PFO Issue 50
Ray Samuels SR-71B PFO Issue 57
Singlepower SLAM-PPX3 single-ended triode headphone amplifier PFO Issue 28
Woo Audio Electrostatic Headphone Amplifier PFO Issue 54
Woo Audio 22 Headphone Amplifier PFO Issue 54

Receivers

April Music Aura Note Music Center PFO Issue 41
Arcam AVR200 receiver PFO Issue 6
Harman Kardon HK3480 receiver PFO Issue 19
Magnum Dynalab 209 Receiver PFO Issue 44
Music Hall the Trio receiver PFO Issue 39
NAD Viso Two receiver PFO Issue 41