Description: Three-way, reflex-loaded, stand-mounted loudspeaker. Drive-units: 1.375" (35mm) beryllium-dome tweeter concentrically mounted with 6.5" (160mm) beryllium-cone midrange driver, 8" (200mm) sandwich-cone woofer. Crossover frequencies: 250Hz, 2kHz. Frequency response: 40Hz–20kHz, ±3dB (frontal average response). Sensitivity: 86dB/2.83V/m. Nominal impedance: 4 ohms. Maximum input power: 200W.
Dimensions: 24.7" (628mm) H (46.7"/1186mm H with stands) by 13.4" (341mm) W by 17.5" (444mm) D. Weight: 101.4 lbs (46kg).
Finish: Piano-gloss wood veneer,…
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Preamplifier: Ayre Acoustics K-5xeMP.
Power Amplifiers: Classé CT-M600, MBL Reference 9007 (both monoblocks).
Loudspeakers: BBC LS3/5a, Sonus Faber Amati Futura…
I used DRA Labs' MLSSA system and a calibrated DPA 4006 microphone to measure the TAD Compact Reference CR1's frequency response in the farfield, and an Earthworks QTC-40 for the nearfield and spatially averaged room responses. My estimate of the CR1's voltage sensitivity was 87.5dB(B)/2.83V/m, which is both about average and slightly above the specified 86dB. The CR1 is specified as being a 4 ohm load, but the speaker's impedance remains above 7.5 ohms throughout the upper midrange and treble, dropping to 4 ohms only between 40 and 225Hz (fig.1). Though there…
The result is a lovely, gently moving piece with a decidedly dark, 1980s feel—some reverb on the guitars, a little chorus, a little flange, and a lot…
For…
First and foremost, the Phono Blocks replicated the uncanny ease and purity of Sutherland's battery-powered models: the PH3D, the Hubble, and the discontinued PhD. Michael…
Description: Two-chassis, dual-mono phono preamplifier. Inputs: one each (RCA). Outputs: two paralleled each (RCA). Gain: 45, 50, 55, 60dB (user-selectable). Cartridge loading: 50, 100, 200, 475, 1k, 10k, 47.5k ohms (user-selectable). Blank loading card supplied to allow user to create additional, custom loading values. Power consumption: 20W (10Wpc each). Operating voltage: 110–120VAC or 220–240 VAC.
Dimensions: (each) 17" (432mm) W by 3" (76mm) H by 17" (432mm) D. Weight: 20.1 lbs (9.5kg) net, 26 lbs (11.8kg) shipping.
Serial Numbers Of Units Reviewed…
Analog Sources: Spiral Groove SG-2 turntable; Spiral Groove Centroid, Tri-Planar Precision Mk.VII tonearms; VPI HR-X turntable & tonearm; Lyra Titan i, Grado Signature Reference cartridges.
Digital Source: Primare CD 31 CD player.
Preamplification: Sutherland Engineering PhD, Parasound Halo JC 3 phono preamplifiers; Audio Research Reference 5, Sutherland Engineering Direct, Placette Active line stages.
Power Amplifiers: VTL MB750 Signature, Mark Levinson No.20.6 monoblocks.
Loudspeakers: Wilson Audio Specialties Sophia II.
Cables:…
I measured the Sutherland Phono Block with Stereophile's loan sample of the Audio Precision SYS2722 system (see the January 2008 "As We See It" and www.ap.com). For logistical reasons, I was able to measure only one of the two monophonic amplifiers auditioned by Brian Damkroger, serial no.1060. The voltage gain at 1kHz accurately tracked the nominal gain of the daughterboards used: "45" measured 45.0dB, "50" 50.2dB, "55" 54.9dB, and "60" 60.1dB. The preamp preserved absolute polarity (ie, was non-inverting) with all gain settings.
The Sutherland's output…