Sugden Sapphire DAP 800 Pre Amplifier

Sugden Sapphire DAP 800 Pre Amplifier

The DAP 800 is an Analogue pre Amplifier with a separate in built DAC facility. It has:-

Analog Inputs:

• One pair of Balanced Inputs
• Four Pair of Phono/RCA Inputs
• One Pair of By-Pass Inputs Phono/RCA

Digital Inputs

• One x USB type B
• Two x Toslink Optical SPDIF
• Three x Coaxial SPDIF

Analog Outputs

• One pair of XLR Balanced Outputs
• One pair of Phono/RCA Tape outputs
• Two pair of Phono/RCA outputs

The Individual sections of the pre-amp i.e. Analogue and Digital are self contained stages having their own Power Supplies voltage regulation and circuit board assemblies The analogue stage has a 50 watt torroidal transformer and the digital a 15 watt E core transformer. The digital facility power supplies are totally isolated from the analogue stage

The Pre Amplifiers analogue stage incorporates a Sugden VCV circuit in its most developed advanced form. This circuit has a high impedance input section, current gain stage (without attenuation problems) which drives a folded cascode stage into a Class A output stage. The folded cascode circuit facilitates a wide bandwidth with maximum dynamics and low capacitive connectivity.

The tonal balance is irrespective of the output level and the sense of headroom, imaging and soundstage is to be believed. The DAC facility to interface with digital products includes inputs for USB, Optical and coaxial SPDIF signals. The actual DAC is a Non-oversampling, digital

filtering- less, DAC where the digital interface transceiver is a Wolfson Micro electronics device. The DAC also includes Post Conversion Filtering in the analogue output stage. The USB signal received is converted via a circuit including a Texas Instruments Universal IC whose SPDIF output signal is re clocked and de jittered by the Wolfson interface transceiver.

This DAC configuration has been adopted for Sugdens digital Processing after many many hours of actual auditioning of a wide sample of DSPs. The auditory perception/ Musical performance in terms of dynamic balance, tonal balance, voice and emotion, are so much more satisfying and the Companies preference.

Note:

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DAP 800 Digital Analogue Pre-amplifier

Facilities

Analogue inputs: Four line level inputs, one balanced input, bypass
Digital inputs: Three SPDIF coax, two SPDIF optical, one USB type B Word length up to 24bit 96k
Outputs: Two line level outputs, one balanced output, tape output
Volume control: Motorised remote control (analogue) RC5 compatible
Mains power switching: Separate for analogue and digital circuits

Technical Specification

Input sensitivity: 120mV for 1 Volt out
Maximum output: 9 Volts
Frequency response: 0dB 15Hz – 98kHz, 3dB    8Hz – 125khz
Signal to noise: >85dB
Distortion: <0.05% @ 1kHz, 1Volt out
Nett Weight: 10 kgs
Dimensions: 120 x 430 x 340mm (hwd)