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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.
Delta PRE is the foundation of your perfect system.
Designed to connect to a range of sources, Delta PRE will extract the highest performance from every recording, whether analog or digital.
Pre-amplifiers provide clean and controlled signals to the power stage. Both precision and perfection are required, and are delivered by Delta PRE.
Audiophiles, recording professionals and equipment reviewers trust Classé amplifiers as a source of sonic truth. Delta Series allows listeners to experience that truth in their own homes.
Every detail of the Delta Series is perfected by hand in our unique production facility in Japan to deliver powerful, natural, expansive sound with minimal noise or distortion.
As the component you’re most likely to touch, the design of Delta PRE matches its exceptional acoustic performance.
Any interacting with Delta PRE is pure pleasure, from the superb cool-to-the-touch materials, to the precise tactile feedback of the volume control.
Touchscreen control reflects Delta PRE’s outstanding capability : pure analog clarity, advanced digital precision, confident, capable power and expressive sound.
|Width||17.50 in (444 mm)|
|Depth (including connectors)||17.68 in (449 mm)|
|Height (including feet)||4.78 in (121 mm)|
|Gross Weight||41.2 lbs (18.7kg)|
|Net Weight||29.8 lbs (13.5kg)|
|Gain Range||-93dB to +14dB|
|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|
|Load for MC – High Output||47kΩ|
|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)|
|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)|
|Power (nominal input. 0dB gain, 32 Ω load)||540mW|
|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 (native – requires Thesycon/Classe driver for Windows) 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|
|BAL / XLR||2 pairs (XLR2 can be assigned as BAL phono in)|
|SE / RCA||2 pairs|
|Phono RCA||1 pair|
|HDMI *(optional)||4* (HDMI 2.0b w/HDCP 2.2)|
|SPDIF AES / EBU||1|
|HDMI *(optional)||1* (HDMI 2.0b w/HDCP 2.2)|
|BAL / XLR||5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)|
|SE / RCA||5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)|
|DC Triggers In / Out||2 sets|
|CAN Bus||1 set in / out|
|RS-232 over RJ-45||1|
|Product Weight (lbs.)||29.8|
|Shipping Depth (in.)||22|
|Shipping Width (in.)||24|
|Shipping Height (in.)||10|
|Product Weight (kg)||13.5|