ACCUSTIC ARTS® TUBE PREAMP III – Audiophile fully balanced reference preamplifier

TUBE PREAMP III highlights

  • Audiophile reference preamplifier with a so called “tube hybrid” concept and 4 reference tubes (2 tubes per channel)
  • Fully balanced circuit design from input to output
  • Advantages of this “tube hybrid” technology:
    – extremely high impedance
    – very high bandwidth
    – very low distortion factors and a “good-natured” distortion spectrum
    – “analog” and very precise sound performance
    – 4 separated amplification paths, which are not influencing each other
  • Professional Class A output stage using technology derived from studio engineering
  • Color high resolution display
  • All used components are of outstanding quality (e.g. Burr Brown® OPA 627) and additionally selected; all relays have high quality gold-plated contacts
  • New 4-channel digital volume control for best crosstalk
  • 3 x fully balanced high level inputs (XLR) and 2 x unbalanced high level inputs (RCA)
  • 1 x unbalanced input (RCA) configured as “SURROUND-BYPASS”
  • 2 x fully balanced outputs (XLR) – 1 x AC coupled, 1 x DC coupled
  • 2 x unbalanced outputs (RCA) – 1 x AC coupled, 1 x DC coupled
  • 1 x headphone output, switchable (1/4″ stereo female jack)
  • 2 x unregulated, switchable output for the connection of an external headphone amplifier (1 x RCA/ Chinch), 1 x (XLR) Phase switch for 0° and 180°
  • 2 magnetically shielded, encapsulated 50 VA toroidal core transformer („Made in Germany“) of premium quality for high output reserves
  • Front panel, cover and remote control are made of massive and solid aluminum; turning knobs made of massive and chromed brass
  • ACCUSTIC ARTS® PREAMP III is “Handmade in Germany”

Specifications

Inputs:
3 x fully balanced high level inputs (XLR)
2 x unbalanced high level input (RCA)
1 x unbalanced high level input or surround bypass (RCA/Cinch)

Outputs:
2 x fully balanced line-out (XLR)
2 x unbalanced line-out (RCA)
1 x unbalanced fixed out (RCA/Chinch)
1 x unbalanced out (XLR)
1 x headphone output (1/4″ stereo female jack)

Frequency response:
DC – 50 kHz (+0 dB / -0,5 dB)
DC – 120 kHz (+0 dB / -1,5 dB)

Signal difference left/right:
< 0.2 dB (from 0 dB to -60 dB)

Crosstalk attenuation L ↔ R:
> 97dB

Input resistance:
balanced: 2 x 50 kΩ
unbalanced: 50 kΩ

Output resistance:
balanced: 2 x 50 Ω
unbalanced: 50 Ω
AC coupled with 3.3 µF

Max. output voltage:
15 Veff

Signal-to-noise-ratio:
-95 dB (unweighted)
-103dB (A-weighted)

Distortion (THD+N):
< 0.002 %

Power consumption:
approx. 25 watts (unit totally on)
< 0,5 watts (stand-by)

Dimensions (H x W x D):
128 x 482 x 393 mm / 5,0 x 19 x 15.5 inches

Weight:
16,0 kg / 35,3 lbs.