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Classé Audio Delta Pre Amplifier

Classé Delta 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.

please contact us 012-258 9079

Mr.Brandon

Description

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.

 

  • 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.

  • 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 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

REVIEWS

In May 2021, Mark Gusew reviewed our combination of Delta PRE and Delta STEREO. He was “blown away by this classy preamp/power amplifier combination…”. He goes on to write: “The flexibility and capability is phenomenal, and it’s obvious that much care has gone into the design and manufacture of this pair with the overall build quality and finish up to the highest standards available anywhere. […] This combination has abilities well beyond the asking price, so is heartily recommended.” Herewith some excerpts of his review:

Award Logo - Stereonet 2021

 

review-logo

By any standards, the latest Classé 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. They look the part, are superbly engineered and constructed to impeccable standards, and can cope with even the most complex of systems without any signs of compromise in their performance.

HiFi News UK _ CLASSÉ - "Best in Class" Products
review-logo
I learned that while the Delta PRE is conceptually similar to the CP-800, its circuitry is far more advanced.
review-logo
Andrew Quint of renowned Audio Magazine “The Absolute Sound” was the first to review the combination of Delta PRE and Delta STEREO in North America. He did so for over a month and was impressed by the Delta models to deliver a transparency that, so far, had only been equaled by more expensive audio components in his reference setup. A link to the full article is included at the bottom of this page.
Mr. Martin Freund from the popular Swiss audiovisual platform “AV Guide” was one of the first in Europe to listen to all Classé products. His verdict was clear: “A first class demonstration. There is hardly a better way to sum up the presentation of the new Classé Delta pre-amplifiers and power amplifiers.” Below we translated some excerpts from his test report which covers both the Delta PRE and the Delta STEREO. A Web link to the full report in German can be found at the end of this page.

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, 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, 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

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