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EC 4.8 MKII Reference Amplifier

Electrocompaniet · The Classic Line

EC 4.8 MKII Reference Amplifier

The dual-mono master control for unparalleled signal purity and authority.

The EC 4.8 MKII represents the definitive refinement of Electrocompaniet’s reference preamplification technology, meticulously engineered to close the gap between the listening room and the master recording. By employing a fully discrete, dual-mono architecture where each channel features its own independent power supply, the unit achieves extraordinary channel separation and signal integrity. It stands as the sophisticated command centre for the Classic Line, ensuring that every nuance of the source is preserved without compromise. Building upon the success of its predecessor, the MKII iteration introduces significant mechanical and sonic enhancements to meet the demands of modern high-resolution systems. Its circuit design is fully balanced from input to output, utilising high-speed JFET transistors in the input stage and high-bias bipolar transistors in the output. This robust, high-bandwidth topology ensures that the preamplifier remains entirely unflappable, delivering dynamic swings and micro-details with effortless stability regardless of the connected load. Sonically, the EC 4.8 MKII is defined by a natural, organic warmth that avoids the clinical coldness common to many modern reference components. It provides a wide, deeply layered soundstage with precise instrumental placement and a rhythmic propulsive force that brings music to life. Listeners will find that it resolves complex textures with ease, offering a treble that is detailed yet smooth, and a bass response that is both weighty and exceptionally well-damped.

Key Features

01

Dual-Mono Architecture

Features two completely independent preamplifier channels, each supported by its own dedicated power supply to ensure maximum channel separation and stability.

02

Fully Balanced Signal Path

Constructed as a true balanced design from input to output, utilising high-quality discrete analogue circuitry to minimise noise and distortion.

03

High-Bias Output Stage

The output stage employs high-bias bipolar transistors for superior control and linearity, ensuring optimal matching with even the most demanding power amplifiers.

04

SPAC Network Control

Integrated communication ports allow the preamplifier to monitor the vital functions of connected Electrocompaniet power amplifiers, ensuring a cohesive and safe system performance.

Design & Philosophy

Chapter 01

Design & Philosophy

The EC 4.8 MKII is engineered to satisfy the need for an advanced, reference-level control unit within a slimline form factor. Its design philosophy centres on the total isolation of audio signals from interference, achieved through the physical separation of left and right channel boards and the use of a proprietary volume control system that maintains a constant signal path length. This ensures a transparent, consistent performance that remains uniform across all volume levels.
Build & Materials

Chapter 02

Build & Materials

Adhering to the Classic Line aesthetic, the preamplifier is housed in a resonance-damping chassis featuring the signature 10mm thick acrylic faceplate and gold-detailed controls. Internally, the unit is constructed with a modular, highly automated layout that ensures consistent quality and long-term reliability. Its industrial design is not merely for show; the robust construction serves to shield delicate internal circuits from external electromagnetic stray fields and mechanical vibrations.
Sonic Signature

Chapter 03

Sonic Signature

In operation, the EC 4.8 MKII is seductively musical, balancing high-resolution detail with a natural, unforced tonal quality. It excels at delivering the propulsive force of rhythmic music while maintaining the subtle, harmonic richness of acoustic and vocal recordings. By providing a dead-silent noise floor, it allows even the smallest spatial cues and room reflections to emerge with total clarity, resulting in a three-dimensional presentation that feels remarkably tangible.

Specifications

Input impedance47 Kohm
Output impedance100 ohm
Max input +-15 Vp-p ( +- 30Vp-p Bal)
Max output+-30 Vp-p ( +- 30Vp-p Bal)
Minimum gain -111dB
Maximum gain 6dB
Noise Floor(0 dB gain)< -130 dB
Frequency responce1 – 200 kHz
Channel Seperation> 120dB
THD (1V in, 1V out)<0.002%
Power consumption (no load or signal)30W
Dimensions(W*D*H) and Waight470mm*372mm*80mm; 11.3 kg – 24.9 lbs