Classé Delta PRE Preamplifier

Description Classé Delta PRE Preamplifier The Classé Delta PRE Preamplifier 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   View Owners Manual >>   Reviews “The latest Classe Delta amps are a triumph, combining a hugely flexible and ultra clean-sounding preamplifier with power amplifiers as capable of mighty clout as they are revealing of the smallest of detail” — Andrew Everard – hi-fi news “Regardless of what others may be doing, in my opinion, no other audio company offers this combination of operational flexibility, high-quality parts, thoughtful design, build quality, and faithfulness to the performance of music. Well done, Classé!” — Dave Thomas – Stereo Times “Classé Audio’s Delta PRE is one of the most feature-laden yet ergonomically enjoyable products I’ve reviewed in some time.” — Aron Garrecht – SoundStage! Classé’s Delta PRE and STEREO are impeccably designed and manufactured products that offer impressive operational flexibility and dependability. These two components are visually appealing and practical to install in a domestic setting. The Delta PRE and STEREO were a pleasure to operate and, more importantly, to listen to.” – Andrew Quint – The Absolute Sound   Control Audiophiles, recording professionals and equipment reviewers trust Classé Delta PRE Preamplifier’s 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. 0.25dB 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 Classé Delta PRE Preamplifier 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 Classé Delta PRE Preamplifier’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   Specifications 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) / 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) 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) HEADPHONE OUTPUT Power (nominal input. 0dB gain, 32 Ω 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, 176.4k, 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