Digital Processor Reviews

Description: 24-bit digital/analog converter. Inputs: five AES/EBU on XLR connectors, two Toslink (EIAJ) optical inputs, one AT&T ST-type optical input. Digital outputs: two AES/EBU on XLR jack, one optical on Toslink jack. Analog outputs: one unbalanced stereo pair on RCA jacks, two balanced stereo pairs on XLR jacks. D/A conversion: two custom 20-bit DACs. Digital filter: 8x-oversampling. Analog filter: Bessel-tuned low-pass, linear phase to 40kHz. Frequency response: 10Hz–20kHz, +0dB, –0.2dB. THD: 0.003% at 1kHz, 0dB, A-weighted. Dynamic range: 98dB or better. S/N ratio: 105dB. Channel separation: better than 110dB. Intermodulation distortion (IM): <0.005%. Low-level linearity: deviation unmeasurable to below –70dB, approximately +1.7dB below –90dB, undithered, referenced to 0dBFS at 1kHz. Output impedance: <6 ohms.
Dimensions: 19" W by 7.5" H by 15.5" D (No.30 converter, including towers), 15.5" W by 4" H by 14.875" D (PLS-330 power supply). Weight: 89 lbs (shipping).
Price: $15,950. Owners of the No.30 can upgrade for $3000 (1995); no longer available (2010). Approximate number of dealers: 65.
Manufacturer: Madrigal Audio Laboratories, Inc., Middletown, CT 06457 (1992); Harman High Performance Audio/Video Group, 1718 West Mishawaka Road, Elkhart, IN 46517. Tel: (516) 594-0300 (2010). Web: www.marklevinson.com.