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The Delta PRE is the foundation of your perfect system. The PRE is designed to connect to a range of sources, it will exact the highest performance from every recording, whether analog or digital.
Delta PRE will deliver perfectly balanced audio to downstream Delta components.
Fidelity
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.
Classé Audio’s Delta Pre is one of the most feature-laden yet ergonomically enjoyable products I’ve reviewed in some time. With analog sources, the Delta Pre sounded communicative, engaging, and well resolved. Used as a preamplifier and DAC, the Delta Pre easily held its own in terms of quality and performance against separate components. But what pushes this two-channel preamplifier-DAC ahead of its competitors are its bass management, PEQ, subwoofer, and source-configuration options. If you’re looking for a central hub for your system that can handle all of your analog and digital sources in one svelte, easy-to-use package, Classé’s Delta Pre is one to check out.
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