Classe Delta Pre preamplifier Black

The Delta PRE delivers perfectly balanced sound to downstream Delta components

fidelity

The Delta PRE is the basis of your perfect system.

It can be connected to numerous source devices and gets the best out of every recording - whether analog or digital.

Preamplifiers provide clean, controlled signals to the power stage. This calls for precision and perfection – child's play for the Delta PRE.

• Ethernet, USB, AES/EBU, coaxial and optical input with optional HDMI
• XLR and RCA input
• Short signal paths to avoid signal interference
• Custom designed anti-vibration feet by Navcom®
• Powerful integrated MC/MM phono stage for up to two phono inputs
• Rhodium-plated connectors for optimal, secure contacts

control

Audiophiles, sound engineers and critics alike trust in the sound quality of the Classé amplifiers. The Delta Series allows users to experience this truth in their own homes.

Every detail of the Delta Series is hand-perfected at our unique manufacturing facility in Japan to deliver powerful, natural, spacious sound with minimal noise or distortion.

• Precise volume control in 0.25 decibel increments
• Digital tone control with Delta PRE Tilt control
• Support for mono and stereo subwoofers for better bass control
• Adjustable frequency and slope controller
• Advanced 5-band parametric equalizer
• Digital bypass mode for all analog sources
• passthrough mode

design

The Delta PRE is the component you interact with the most. Their design is an expression of their outstanding acoustic performance.

Every interaction with the Delta PRE is pure pleasure - from the first-class, pleasantly cool materials to the precise tactile feedback of the volume control.

The touchscreen operation reflects the outstanding characteristics of the Delta PRE: pure analog clarity, pioneering digital precision, superior performance and expressive sound.

• Minimalist design and unrivaled performance in perfect harmony
• Luxurious-looking anodized aluminum body
• Responsive touchscreen display with adjustable brightness
• Perfectly matched to the other components of the Delta series

Dimensions

Width: 444 mm (17.50 in)

Depth (including ports): 1449 mm (17.68 in)

Height including feet: 121 mm (4.78 in)

Weight

Gross weight :18.7kg

Net weight: 13.5kg

General

Volume adjustment: -93dB to +14dB

Channel equality: 0.05dB

Input impedance (at 1kHz, BAL / SE): 50kO

Output impedance BAL / SE: 200O / 50O

Maximum output level BAL / SE: 18Vrms / 9Vrms

bypass mode
(Analog inputs, tone/EQ/ subwoofer disabled)

Frequency response (-3dB, 50O 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 attenuation (one channel not driven) (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 input capacitance for type MM (47k Ohm):

50pF, 100pF, 150pF, 200pF, 250pF, 300pF, 350pF, 400pF, 450pF

Selectable input resistance for MC Low - low output level:

7.5O, 10O, 33O, 50O, 82O, 100O, 330O, 1kO

Input impedance for MC High – High output level:

47kO

MM, MC High - High output level

Gain (1kHz, 20O 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- Low output level

Gain (1kHz, 20O source impedance, 1kO load):

60dB

SNR (20Hz-20kHz)

68dB (74dB A-wtd)

Max input level (overload ref 0.5mVrms, 1kO load):

12dB (20Hz), 31dB (1kHz), 52dB (10kHz)

Output power for headphones (nominal input, 0dB gain, 32O load):

540mW

Output Impedance:

6.8O

file formats
and supported sample rates

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/Class driver for Windows) DSD64, (DoP)

Ethernet: WAV, AIFF, ALAC, FLAC, WMA, AAC, MP3, OGG_VORBIS (maximum 192k/24b) DSD64, (DoP)

SPDIF: (Optical, Coax, AES/EBU), PCM 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k / DSD64

inputs and outputs
analogue in

BAL/XLR: 2 pairs (XLR2 can be configured as BAL phono in)

SE / RCA: 2 pairs

Phono RCA: 1 pair

Digital In

HDMI: 4* (HDMI 2.0bm/HDCP 2.2)

USB F: 1

USB B: 1

SPDIF coaxial: 3

SPDIF optical: 3

SPDIF AES/EBU: 1

Ethernet: 1

exits

HDMI: 1* (HDMI 2.0bm/HDCP 2.2)

BAL / XLR: 5 (configurable: 2pairs+1sub, 1pair+1 subwoofer pair,...)

SE / RCA: 5 (configurable: 2pairs+1sub, 1pair+1 subwoofer pair,...)

automatic

DC Trigger In/Out: 2 sets

CAN bus: 1 set on / off

RS-232 over RJ-46: 1