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.
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Network, USB, AES/EBU, coax and optical inputs with optional HDMI
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XLR and RCA inputs
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Short signal paths to minimise signal interference
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Custom-made Navcom® feet absorb and reduce vibrations
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High-performance onboard MC/MM Phono stage supports up to two phono inputs
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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.
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0.25dB volume step precision to find your perfect sound level
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Digital domain tone control with Delta PRE Tilt control
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Support for mono or stereo subwoofers for better control of bass
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Selectable frequency and slope control
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Advanced five-band digital domain parametric equalization
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Digital bypass mode available to all analog sources
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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.
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Harmony between minimal design and unrivalled performance
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Luxurious anodized aluminum body
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Adjustable brightness, responsive touchscreen display
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Perfectly complements other components in the Delta family
OVERALL DIMENSIONS
WEIGHT
GENERAL
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Gain Range
-93dB to +14dB
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Channel Matching
0.05dB
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Input Impedance (at 1kHz, BAL / SE)
50kohms
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Output Impedance (BAL / SE)
200ohms / 50ohms
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Maximum Output Level (BAL / SE)
18Vrms / 9Vrms
BYPASS MODE
(ANALOG INPUTS, TONE / EQ / SUBWOOFERS DISABLED)
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Frequency Response (-3dB, 50ohms source impedance)
1Hz – 2MHz
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Harmonic Distortion (measurement bandwidth: 90kHz)
<0.0004% at 1kHz
<0.0005% at 10kHz
<0.0006% at 20kHz
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Intermodulation Distortion (measurement bandwidth: 90kHz)
<0.001%
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Maximum Input Level (BAL / SE) (at 0dB gain)
9Vrms (+21.3dBu) / 4.5Vrms (+15.3dBu)
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Signal-to-Noise Ratio (A wtd) (22kHz BW, ref 9Vrms)
130dB (133dBA)
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Crosstalk (one channel undriven) (BAL / SE)
-143dB (100Hz)
-140dB (1kHz)
-124dB (10kHz)
PHONO SECTION
(0DB GAIN, BYPASS MODE, XLR2 IN, MAIN XLR OUT)
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RIAA Deviation (20Hz-20kHz)
< 0.2dB
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Selectable Load for MM Type (47k II)
50pF, 100pF, 150pF, 200pF, 250pF, 300pF, 350pF, 400pF, 450pF
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Selectable Load for MC – Low Output
7.5ohms, 10ohms, 33ohms, 50ohms, 82ohms, 100ohms, 330ohms, 1kohms
Selectable Load for MC – High Output
47kohms
MM, MC – HIGH OUTPUT
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Gain (1kHz, 20ohms source impedance)
41.5dB
SNR (22kHz BW, ref 5mVrms in)
86dB (93dB A-wtd)
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Max Input Level (overload ref 5mVrms)
11dB (20Hz), 23dB (1kHz), 34dB (10kHz)
MC – LOW OUTPUT
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Gain (1kHz, 20ohms source impedance, 1kohm load)
60dB
SNR (20Hz-20kHz)
68dB (74dB A-wtd)
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Max Input Level (overload ref 0.5mVrms, 1kohm load)
12dB (20Hz), 31dB (1kHz), 52dB (10kHz)
HEADPHONE OUTPUT
FILE FORMATS AND SAMPLE RATES SUPPORTED
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USB-F
44.1k, 48k, 88.2k, 96k (iOS specific)
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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
DIGITAL IN
OUTPUTS
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HDMI *(optional)
1* (HDMI 2.0b w/HDCP 2.2)
BAL / XLR
5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)
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SE / RCA
5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)
AUTOMATION
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"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"
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"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."
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"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."
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"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!"
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"Classé Audio’s Delta PRE is one of the most feature-laden yet ergonomically enjoyable products I’ve reviewed in some time."
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