Classe Delta Pre

Описание Classe Delta Pre

Предварительный усилитель с Ethernet

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 (DB 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: 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: 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