Power, Redefined
A complete redesign of the power supply has been implemented, utilizing separate analogue and digital circuits. Custom audio-grade transformers are employed to drive each section of the preamplifier, ensuring optimal performance. Each side (left & right) of the preamplifier has its dedicated power supply, enhancing channel separation.
Mastery in Dissipation
An additional separate power supply is dedicated to driving the digital section of the preamplifier. The heat sink has been crafted in-house to maximize the utilization of available surface area and efficiently dissipate heat from the power supplies. The power supply units feature customized Goldmund brand components, including oxygen-free gold, guaranteeing an extraordinarily stable sonic power supply for the audio drivers.
Crafted to Perfection
Heat dissipation has been enhanced with a meticulously crafted heat sink, created using CNC machining techniques, is implemented. Extensive work has been conducted on the audio board of the preamplifier section. A new shielding design, which also serves as a heat sink, has been implemented. Each Low Noise Op-amp on the audio board is equipped with a custom heat sink. The heat sink is precision machined from a single piece of aluminium, ensuring optimal cooling efficiency by establishing direct mechanical contact between each Op-amp and the dissipator. This configuration provides the best available cooling capability for the audio circuitry.
Specifications
Type: Reference Analog Stereo Preamplifier
Output Stage: Pure Class A
Architecture: Fully Dual-Mono
Power Supply: Separate external power supply
Nominal Output Level: 1.55 V RMS
Maximum Output (Balanced): 9.6 V RMS
Maximum Output (Unbalanced): 4.8 V RMS
Output Impedance: 50 Ω
Input Impedance: 39 kΩ
Nominal Input Sensitivity: 100 mV
Maximum Input (Balanced): 9.6 V RMS
Maximum Input (Unbalanced): 4.8 V RMS
Input Level Trim: ±12 dB independently adjustable for each of the 7 inputs
Performance Specifications
Frequency Response±0 dB: 20 Hz – 20 kHz±3 dB: 0.2 Hz – 1.2 MHz
Group Delay<300 ns (DC–200 kHz)
Slew Rate: 2,500 V/µsRise Time<400 ns
THD (Balanced In → Balanced Out): 0.0001%
THD (Unbalanced In → Unbalanced Out): 0.0002%
IMD (Balanced): 0.0001%
IMD (Unbalanced): 0.0002%
Signal-to-Noise Ratio: >126 dB
A-Weighted SNR: >136 dB
Channel Separation: >105 dB (20 Hz–20 kHz)
Inputs & Outputs
Analog Inputs
7 × Balanced XLR stereo inputs
3 × Unbalanced RCA stereo inputs (including tape input)
Analog Outputs
3 × Balanced XLR stereo outputs
3 × Unbalanced RCA stereo outputs (including tape output)
Control & Connectivity
RS-232 control
Ground lift / signal grounding post
Separate earth and signal ground connections
Link Float grounding system
Automatic muting during AC interruption
Automatic tape-loop protection
Power
Nominal AC Voltage: 115 V or 230 V
Input Voltage Range: ±15%
Maximum Power Consumption: 70 W
Physical Specifications
Main Preamplifier Chassis
Dimensions (W × H × D): 44 × 16 × 40.6 cm (17.3 × 6.3 × 16.0 in)
Weight: 20 kg (44 lb)
External Power Supply
Dimensions (W × H × D): 44 × 16 × 39 cm (17.3 × 6.3 × 15.4 in)
Weight: 25 kg (55 lb)