Masterpieces of Sound & Vision

Classe Delta Pre – Preamp – Demo full warranty





The Delta PRE is the foundation of your perfect system. Designed to connect to a range of sources, the PRE will exact the highest performance from every recording, whether analog or digital.

Delta PRE will deliver perfectly balanced audio to downstream Delta components.  HDMI switching board available.

Gain Range: -93dB to +14dB
Channel Matching: 0.05dB
Input Impedance (at 1kHz, BAL / SE): 50kΩ
Output Impedance BAL / SE: 200Ω / 50Ω
Maximum Output Level BAL / SE: 18Vrms / 9Vrms
Frequency Response (-3dB, 50Ω source impedance): 1Hz – 2MHz
Harmonic Distortion (measurement bandwidth: 90kHz): <0.0004% at 1kHz <0.0005% at 10kHz <0.0006% at 20kHz
Intermodulation Distortion (measurement bandwidth: 90kHz): <0.001%
Maximum Input Level BAL / SE (at 0dB gain): 9Vrms (+21.3dBu) / 4.5Vrms (+15.3dBu)
Signal-to-Noise Ratio (A wtd) (22kHz BW, ref 9Vrms): 130dB (133dBA)
Crosstalk (one channel undriven) (BAL / SE): -143dB (100Hz), -140dB (1kHz), -124dB (10kHz)
RIAA Deviation (20Hz-20kHz): < 0.2dB
Selectable Load for MM Type (47k II): 50pF, 100pF, 150pF, 200pF, 250pF, 300pF, 350pF, 400pF, 450pF
Selectable Load for MC:
Low Output: 7.5Ω, 10Ω, 33Ω, 50Ω, 82Ω, 100Ω, 330Ω, 1kΩ
High Output: 47kΩ
MM, MC High Output:
Gain (1kHz, 20Ω source impedance): 41.5dB
SNR (22kHz BW, ref 5mVrms in): 86dB (93dB A-wtd)
Max Input Level (overload ref 5mVrms): 11dB (20Hz), 23dB (1kHz), 34dB (10kHz)
MC Low Output:
Gain (1kHz, 20Ω source impedance, 1kΩ load): 60dB
SNR (20Hz-20kHz): 68dB (74dB A-wtd)
Max Input Level (overload ref 0.5mVrms, 1kΩ load): 12dB (20Hz), 31dB (1kHz), 52dB (10kHz)
Headphone Power (nominal input. 0dB gain, 32 Ω load): 540mW
Headphone Output Impedance: 6.8Ω
USB-F: 44.1k, 48k, 88.2k, 96k (iOS specific)
USB-B: 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k, 352.8k, 384k, DSD64, DSD128, DSD256, DSD64, (DoP)
Ethernet: WAV, AIFF, ALAC, FLAC, WMA, AAC, MP3, OGG_VORBIS (max 192k/24b), DSD64, (DoP)
SPDIF (opt, coax, AES / EBU): PCM 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k / DSD64
Dimensions (WDH): 17.50″ x 17.68″ x 4.78″
Weight: 29.8 lbs.


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