Boulder 1012 D/A preamplifier Specifications

Sidebar 1: Specifications

Description: Line-level preamplifier with integral D/A converter. Digital inputs: 3 AES/EBU, convertible to S/PDIF with DABL adapter (included); 1 TosLink. Sampling rates: 32, 44.1, 48, 88.2, 96kHz. Digital signal-processor speed: 1 GFLOP, 167MHz clock. Decoding system: 64-bit math, 24-bit output. Upandoversampling ratio: 16x (32, 44.1, 48kHz sample rates), 8x (88.2, 96kHz). Analog anti-imaging filter: 3-stage, 6-pole Bessel. Analog inputs: 3. Phono inputs: 1. Main balanced outputs: 1 on XLR. Record balanced outputs: 1 on XLR. Output level for full-scale digital input at record output: 4.25V RMS. THD+N: 0.0015% (-96.5dB), digital (0dBFS, 20Hz-1kHz); 0.0075% (-82.5dB),digital (0dBFS, 20Hz); 0.0015% (-96.5dB), analog (2V output, 20Hz-20kHz). S/N ratio: 109dB A-weighted, 107dB unweighted, digital. Clip/noise ratio: 118dB, analog. Frequency response: 0.03Hz-20kHz, -0.5dB (digital); 0.02Hz-250kHz, -3dB (analog). Analog input impedance: 100 ohms balanced. Maximum analog input level: 6.0V RMS. Output impedance: 100 ohms balanced, 50 ohms unbalanced. Maximum analog output level: 14.0V RMS. Maximum voltage gain: line input, 20dB; MM phono, 60dB; MC phono, 80dB. Volume range: 100dB in steps of 0.5dB, ±0.05dB. Record path gain, balanced output: 8.5dB. Record path gain, unbalanced output: 2.5dB. Crosstalk, L-R or R-L: -101dB or better, 20Hz-20kHz. Crosstalk adjacent inputs: -115dB or better, 20Hz-20kHz.
Dimensions: 18" W by 5.750" H by 15.75" D. Weight: 45 lbs.
Serial numbers of units reviewed: ID78 (auditioning), LR25 (measurements).
Price: $15,000. Approximate number of dealers: 15.
Manufacturer: Boulder Amplifiers, Inc., 3235 Prairie Avenue, Boulder, CO 80301. Tel: (303) 449-8220. Fax: (303) 449-2987. Web: