Classé Audio Delta Pre - Preamplifier

The Delta Pre is Classé's flagship preamplifier, built to extract the highest performance from any analog or digital source through short signal paths, precision components, and a touchscreen control interface. It combines network, USB, AES/EBU, coax, optical, and optional HDMI digital inputs with a high-performance MC/MM phono stage, 0.25dB volume step precision, and advanced digital-domain tone and bass management.

• Network, USB, AES/EBU, coax, and optical digital inputs, with optional HDMI
• XLR and RCA analog inputs
• Short signal paths to minimize interference
• Custom-made Navcom feet to absorb and reduce vibrations
• High-performance onboard MC/MM phono stage supporting up to two phono inputs
• Rhodium-plated connectors for secure contacts
• 0.25dB volume step precision
• Digital-domain tone control with Delta Pre Tilt control
• Support for mono or stereo subwoofers with selectable frequency and slope control
• Advanced five-band digital-domain parametric equalization
• Digital bypass mode for all analog sources; pass-through mode
• Luxurious anodized aluminum body with adjustable-brightness touchscreen display

• Dimensions: 17.50in (444mm) W x 17.68in (449mm) D (including connectors) x 4.78in (121mm) H (including feet)
• Weight: 29.8lb (13.5kg) net, 41.2lb (18.7kg) gross
• Gain range: -93dB to +14dB
• Channel matching: 0.05dB
• Input impedance: 50kΩ (1kHz, BAL/SE)
• Output impedance: 200Ω (BAL) / 50Ω (SE)
• Bypass mode max output level: 18Vrms (BAL) / 9Vrms (SE)
• Bypass mode frequency response: 1Hz–2MHz (-3dB, 50Ω source impedance)
• Bypass mode harmonic distortion (90kHz BW): <0.0004% at 1kHz, <0.0005% at 10kHz, <0.0006% at 20kHz
• Bypass mode intermodulation distortion: <0.001%
• Bypass mode SNR: 130dB, 133dBA weighted (22kHz BW, ref 9Vrms)
• Bypass mode crosstalk: -143dB (100Hz), -140dB (1kHz), -124dB (10kHz)
• Phono RIAA deviation: <0.2dB (20Hz–20kHz)
• Phono selectable load, MM: 50–450pF in 50pF steps
• Phono selectable load, MC low output: 7.5Ω, 10Ω, 33Ω, 50Ω, 82Ω, 100Ω, 330Ω, 1kΩ
• Phono load, MC high output: 47kΩ
• Phono gain, MM/MC high output: 41.5dB; SNR 86dB (93dB A-weighted)
• Phono gain, MC low output: 60dB; SNR 68dB (74dB A-weighted)
• File formats/sample rates: USB-F up to 96kHz; USB-B up to 384kHz PCM and DSD64/128/256; Ethernet WAV/AIFF/ALAC/FLAC/WMA/AAC/MP3/OGG Vorbis up to 192k/24bit plus DSD64; SPDIF PCM up to 192kHz plus DSD64
• Analog inputs: 2 pairs BAL/XLR (XLR2 assignable as balanced phono in), 2 pairs SE/RCA, 1 pair phono RCA
• Digital inputs: 4 HDMI 2.0b/HDCP 2.2 (optional), 1 USB-F, 1 USB-B, 3 SPDIF coaxial, 3 SPDIF optical, 1 SPDIF AES/EBU, 1 Ethernet
• Outputs: 1 HDMI 2.0b/HDCP 2.2 (optional), 5 BAL/XLR and 5 SE/RCA (configurable)
• Automation: 2 sets DC triggers in/out, 1 CAN bus in/out, 1 RS-232 over RJ-45