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The SoundStage! Network's Preamplifier-Measurement History with BHK Labs

Following the introduction of our highly successful loudspeaker-testing program with Canada's National Research Council (NRC) and subsequent amplifier-testing program in 2002, the SoundStage! Network began its preamplifier-testing program in late 2004.

To conduct these test we commissioned BHK Labs, the same laboratory who does the Network's amplifier tests, headed by Bascom King, well-known design engineer, consultant, and technical writer for such magazines as the former Audio.

Each preamplifier is tested using the Audio Precision System Two, and each preamplifier goes through the same type of testing program to ensure consistency, quality, and comparability in the test results.

Preamplifier models measured
(arranged alphabetically by brand name)

Accuphase C-2850 (SSLab)
Audio Research Reference 3 (BHK)
Aurum Acoustics Integris CDP (BHK)
Bryston BP 6 C-Series (BHK)
Bryston BR-20 (SSLab)
Conrad-Johnson ACT2 (BHK)
Convergent Audio Technology SL1 Ultimate Mk II (BHK)
Einstein The Tube (BHK)
Hegel Music Systems P30A (SSLab)
Karan Acoustics Masterpiece Collection LINEb (SSLab)
NuForce P-9 (BHK)
Rogue Audio Metis (BHK)
Song Audio SA-1 (BHK)
SPL Director Mk2 (SSLab)

With the cooperation of Canada's National Research Council (NRC), in the year 2000 the SoundStage! Network began measuring and publishing objective measurements of loudspeaker products -- a first for online publications.

The NRC's legacy of producing accurate loudspeaker measurements goes back decades. Literally thousands of speakers have been measured in their facilities since the '70s, and they are one of the few facilities in the world with the resources and expertise to conduct such tests.

The NRC facilities have, of course, been continually upgraded and today it's a state-of-the-art laboratory that includes an anechoic chamber, reference-grade test equipment, experienced staff, and a standardized process that is used consistently for all products. The end result are measurements that we feel are a benchmark for the industry, and useful for anyone wishing to obtain accurate, objective data about loudspeaker products.

Speaker models measured
(arranged alphabetically by brand name)

The SoundStage! Network's Amplifier-Measurement History with BHK Labs and Our SoundStage! Audio-Electronics Lab

Following the introduction of our highly successful loudspeaker-testing program with Canada's National Research Council (NRC), in 2001 the SoundStage! Network began its amplifier-testing program. Originally, tests were done by BHK Labs, headed by Bascom King, well-known design engineer, consultant, and technical writer for such magazines as the former Audio. BHK Labs tested amplifiers using the Audio Precision System Two. Beginning in December 2020, we brought the amplifier testing in-house to the SoundStage! electronics lab and began using an APx555 B Series analyzer.

Power and integrated amplifier models measured
(arranged alphabetically by brand name)

Accustic Arts Amp II-AC High Performance
Anthem PVA 2
Anthem Statement M1
Anthem Statement P2
Arcam SA30 (i)
Atoll Electronique IN200 Signature (i)
AudioControl The Director M4800 (mc)
Audio Electronic Supply Six Pac
Audio Research 150.2
Audio Research Foundation VT80
Audio Research VS115
Audio Research VS-55
Audio Research Reference 110
Audiopax Stereo Eight Eight
Atma-Sphere MA-1 Mk II
Ayre Acoustics VX-5
Ayre Acoustics VX-R
Bel Canto Design e.One REF1000
Bel Canto Design e.One REF600M
Belles 350A Reference
Belles Statement SA-30
Benchmark Media Systems AHB2
Blue Circle Audio BC202
Blue Circle Audio BC28
Blue Circle Audio DAR (i)
Bryston 2B SST
Bryston 4B SST
Bryston 4B³
Bryston B100 SST (i)
Bryston B135³ (Cubed)
Cambridge Audio Evo 150 (i)
Calyx Audio Femti
Classé Audio Delta CA-2200
Coda Technologies 12.0
Conrad-Johnson Premier 140
Conrad-Johnson Premier 350
Constellation Audio Revelation Taurus Mono
Convergent Audio Technology JL2 Signature Mk 2
CR Developments Romulus
Cyrus Audio i9-XR (i)
Cyrus Audio Stereo 200
darTZeel NHB-108 Model One
deHavilland Aries 845
deHavilland Aries GM70
Denon PMA-1700NE (i)
Devialet D-Premier (i)
Devialet Expert 130 Pro (i)
Einstein Absolute Tune (i)
Emotiva BasX TA1 (r)
Exogal Ion
Esoteric A-100 (i)
Eximus S1
Flying Mole CA-S10 (i)
Flying Mole DAD-M100proHT
Grommes 360
Gryphon Audio Designs Diablo 120 (i)
Hegel Music Systems H20
Hegel Music Systems H30
Hegel Music Systems H30A
Hegel Music Systems H360 (i)
Hegel Music Systems H590 (i)
Hegel Music Systems H80 (i)
Hegel Music Systems H95 (i)
Hyperion Sound Design HT-88
JAS Audio Bravo 2.3 (i)
JE Audio VS70 (i)
JE Audio VS70.1 (i)
Jones Audio PA-M300 Series 2
Kinki Studio EX-M1+ (i)
Krell FPB-300c
Lamm Industries ML1.1
Lamm Industries M1.2 Reference
Liberty Audio B2B-100
Linn Klimax Twin
Luxman B-1000F
Luxman L-509U (i)
Luxman M-900u
Lyngdorf Audio TDA-1120 (i)
Manley Laboratories Snapper
Manley Laboratories Mahi
Marantz 40n (i)
miniDSP SHD Power (i)
Monarchy Audio SE-160
Mola Mola Kaluga
Music Hall a15.3 (i)
Musical Fidelity M6si (i)
NAD C 298
NAD C 372 (i)
NAD D 3045 (i)
NAD C 3050 LE (i)
NAD C 399 (i)
NAD C 700 (i)
NAD Masters M10 V2 (i)
NAD Masters M23
NAD Masters M28
NAD Masters M32 DirectDigital (i)
NAD Masters M33 (mc)
Cyrus Audio Stereo 200
Nightingale ATS-90
Opera Consonance Reference 9.9A
Opera Audio M800
Opera Audio Consonance Cyber-10 Signature
Oracle Audio SI 1000 (i)
Orpheus Laboratories Three S
Odyssey Audio Khartago
Parasound Halo A 23
Parasound Halo A 23+
Parasound Halo A 31
Parasound Halo JC 5
Pathos Acoustics Lògos MKII (i)
Pro-Ject Audio Systems MaiA DS3 (i)
PS Audio HCA-2
PS Audio Stellar M700
Raysonic SP-100 (i)
Redgum Audio RGM175
Rogue Audio Atlas
Rogue Audio Medusa
Rogue Audio Tempest II (i)
Roksan Attessa Streaming (i)
Rotel A11 Tribute (i)
Rotel A12MKII (i)
Rotel Diamond Series RA-6000 (i)
Rotel RA-1572MKII (i)
Rotel Michi X5 (i)
Simaudio Moon 400M
Simaudio Moon 860A v2
Simaudio Moon Evolution 870A
Simaudio Moon Neo 330A
Simaudio Moon W-6
Song Audio SA-300 MB
SPL Performer m1000
Starke Sound Fiera4
Stello M200
SVS Prime Wireless Pro Soundbase (i)
Technics Grand Class SU-G700M2 (i)
Technics Reference Class SU-R1000 (i)
Tenor Audio 75 Wi
Thor Audio TPA-30
Threshold Audio S/5000e
Vincent SP-T100
Wadia a315
Wyetech Labs Topaz 572B
Yamaha A-S3200 (i)

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