CLASSSE Delta Preamp
Pre Amplifier
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.
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.
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.
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.
REVIEWS
"Classé's new Delta PRE and STEREO amplifiers are a technical tour de force, with flawless performance. There is no aspect of the sonic performance that I can criticise. This combination has abilities well beyond the asking price, so is heartily recommended." — Mark Gusew
"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
"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
"Classé Audio’s Delta PRE is one of the most feature-laden yet ergonomically enjoyable products I’ve reviewed in some time." — Aron Garrecht
"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
"A first-class demonstration from A to Z: there is hardly a better way to sum up the presentation of the new Classé Delta preamplifiers and power amplifiers." - Martin Freund
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) |
<0.001% |
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 |