The Classe Audio 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. The Delta PRE will deliver perfectly balanced audio to your choice of Delta amplification.
Classe Audio Delta Pre Key Features:
- 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
- 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
Classe Audio Delta Pre Specs:
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)
- 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