CLASSE Delta Pre Amplifier (Each)

FIDELITY

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.

Network, USB, AES/EBU, coax and optical inputs with optional HDMI
XLR and RCA inputs
Short signal paths to minimise signal interference
Custom-made Navcom® feet absorb and reduce vibrations
High-performance onboard MC/MM Phono stage supports up to two phono inputs
Rhodium-plated connectors for excellent and secure contacts

CONTROL

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.

25dB volume step precision to find your perfect sound level
Digital domain tone control with Delta PRE Tilt control
Support for mono or stereo subwoofers for better control of bass
Selectable frequency and slope control
Advanced five-band digital domain parametric equalization
Digital bypass mode available to all analog sources
Pass thru mode

DESIGN

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.

Harmony between minimal design and unrivalled performance
Luxurious anodized aluminum body
Adjustable brightness, responsive touchscreen display
Perfectly complements other components in the Delta family

OVERALL DIMENSIONS Width - 17.50 in (444 mm) Depth (including connectors) - 17.68 in (449 mm) Height (including feet) - 4.78 in (121 mm) WEIGHT Gross Weight - 41.2 lbs (18.7kg) Net Weight - 29.8 lbs (13.5kg) GENERAL 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 BYPASS MODE (ANALOG INPUTS, TONE / EQ / SUBWOOFERS DISABLED) 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) /
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)

PHONO SECTION (0DB GAIN, BYPASS MODE, XLR2 IN, MAIN XLR OUT) 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 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) Power (nominal input, 0dB gain, 32Ω load) - 540mW Output Impedance - 6.8Ω FILE FORMATS AND SAMPLE RATES SUPPORTED 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,
4k, 192k / DSD64

INPUT / OUTPUT COMPLEMENT ANALOG IN BAL / XLR - 2 pairs (XLR2 can be assigned as BAL phono in) SE / RCA - 2 pairs Phono RCA - 1 pair DIGITAL IN HDMI *(optional) - 4* (HDMI 2.0b w/HDCP 2.2) USB-F - 1 USB-B - 1 SPDIF Coaxial - 3 SPDIF Optical - 3 SPDIF AES / EBU - 1 Ethernet - 1 OUTPUTS 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,…) AUTOMATION DC Triggers In / Out - 2 sets CAN Bus - 1 set in / out RS-232 over RJ-45 - 1

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