CLASSE DELTA PRE

Delta PRE Mk II is the foundation of your perfect system.

Designed to connect to a range of sources, Delta PRE Mk II 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 Mk II.

• 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

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.

• 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

As the component you’re most likely to touch, the design of Delta PRE Mk II matches its exceptional acoustic performance.

Any interaction with Delta PRE Mk II 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 Mk II’s outstanding capability: pure analog clarity, advanced digital precision, confident, capable power and expressive sound.

• Harmony between minimal design and unrivalled performance
• Luxurious anodized aluminum body
• Adjustable brightness, responsive touchscreen display
• Perfectly complements other components in the Delta family

Your Classé system deserves an upgrade. Add high-resolution streaming through HEOS® for the most optimal audio performance from any source.

Width 17.48 in (444 mm)

Depth (including connectors) 17.64 in (448 mm)

Gross Weight 41.2 lbs (18.7kg)

Net Weight 29.8 lbs (13.5kg)

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

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)

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

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)

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)

Frequency Response

(-3dB, sweep Fs=192kHz) 5Hz – 90kHz

Harmonic Distortion (measurement bandwidth: 90kHz) <0.0015% (20Hz to 20kHz) 

Dynamic range (-60dBFS, Fs=44.1kHz, A-wtd) 124dB 

Signal to Noise Ratio (Fs=44.1kHz, A-wtd) 125dB (dBA) 

Frequency Response

(50Ω source impedance, Tone and EQ not enabled) 10Hz – 84.5kHz 

Harmonic Distortion

(measurement bandwidth: 90kHz) <0.002% (20Hz to 20kHz) 

Maximum input level BAL / SE (at 0dB gain) 5.4Vrms (+2.5dBr) / 2.7Vrms (+2.5dBr)

Crosstalk (one channel undriven) (BAL/SE) -105dB(100Hz), -120dB(1kHz), -120dB(10kHz)  

Power

(nominal input. 0dB gain, 32 Ω load) 540mW

Output Impedance 6.8Ω

Standby 0.2W 

Wake on LAN 3.1W

Nominal 35W  

Max. power (with optional HDMI board) 55W

Network Connection Ethernet 

USB-A Host WMA, MP3, AAC, WAV up to 192/24, FLAC up to 192/24, AIFF up to 192/24, ALAC up to 96/24, DSF up to 11.2 

Ethernet WMA, MP3, AAC, WAV up to 192/24, FLAC up to 192/24, AIFF up to 192/24, ALAC up to 96/24, DSF up to 11.2 

Airplay Airplay 2   

Music Service Providers Supported (varies by region, subject to change)  Spotify (Connect), Tidal (including Hi Res), Deezer, Amazon Music HD, TuneIn, Pandora, Napster, iHeartRadio, Sirus XM, Soundcloud, MOOD:MIX, AWA, QPlay, Ximalaya, Sony Hi-Res  

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, DSD128 (DoP)  

SPDIF

(opt, coax, AES/EBU) PCM 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k

/DSD64 over SPDIF/

BAL / XLR 2 pairs (XLR2 can be assigned as

BAL phono in)

SE / RCA 2 pairs

Phono RCA 1 pair

USB-F 1

USB-B 1

SPDIF Coaxial 3

SPDIF Optical 3

SPDIF AES / EBU 1

Ethernet 1

BAL / XLR 5 (configurable: 2pairs+1sub,

1pair+1sub pair,…)

SE / RCA 5 (configurable: 2pairs+1sub,

1pair+1sub pair,…)

DC Triggers In / Out 2 sets

CAN Bus 1 set in / out

RS-232 over RJ-45 1

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