Ten years in development. 0.0002% THD+N. 113dB SNR. A proprietary fully electronic volume control with 1000-step 0.1dB resolution. Fully discrete, dual-mono, pure Class A. The Electrocompaniet EC 5 is the ultimate expression of preamplifier purity — a masterpiece that redefines signal integrity while honouring Electrocompaniet's classic design aesthetic.

The Ultimate Expression of Preamplifier Purity

There are preamplifiers. And then there is the Electrocompaniet EC 5. After ten years of painstaking development, Electrocompaniet has unveiled a preamplifier that does not simply refine what came before — it redefines what a preamplifier can be. Through groundbreaking proprietary technologies and an architectural philosophy of absolute signal integrity, the EC 5 sets a new reference point for transparency, imaging, and musical truthfulness — while honouring the classic Electrocompaniet design aesthetic with meaningful and considered upgrades.

This is the ultimate expression of preamplifier purity.

A Decade of Development — One Proprietary Volume Control

The most remarkable innovation in the EC 5 is a technology ten years in the making: a proprietary, fully electronic volume control that eliminates every mechanical switch, relay, and stepped attenuator contact path from the audio signal. This is not a trivial achievement. Conventional volume controls — whether mechanical potentiometers, switched resistor ladders, or relay-based attenuators — all change the electrical topology of the signal path as the volume setting changes. Different attenuation levels introduce different impedances, phase shifts, and signal path lengths, subtly but measurably altering the way the signal arrives at the output.

The EC 5's proprietary volume control eliminates this entirely. Across its 1000 steps of approximately 0.1dB resolution, the signal path length, impedance, and phase behaviour remain constant regardless of the volume setting. The electrical characteristics do not change. The imaging cues — timing, phase, spatial positioning — remain absolutely stable from the quietest whisper to the loudest orchestral climax. The electronics disappear, and the recording's spatial information is preserved intact.

The result — when combined with quality amplification and speakers — is a more consistent staging, stable instrument placement, and preserved holographic depth at every listening level. Very fine, repeatable 0.1dB steps allow absolute level setting without upsetting channel balance or relative microdynamics, keeping the soundstage centre, depth, and instrument positions precisely where the recording placed them.

Fully Discrete, Dual-Mono, Pure Class A — The EC 5 Architecture

The EC 5's volume control operates within an architecture built to extract every last degree of performance from its remarkable specification. A fully discrete, balanced, dual-mono circuit operates in pure Class A throughout — with independent power supplies per channel and heavy storage capacitance ensuring that each channel's power delivery is isolated, stable, and immune to the demands of the other.

Electrocompaniet's AmpliWire topology — characterised by high open-loop bandwidth and deliberately low negative feedback — reduces distortion naturally, maintains phase coherence across the audible frequency range, and preserves the channel separation that creates convincing spatial imaging. At 0.0002% THD+N and 113dB SNR, with a frequency response extending from 0.5Hz to 450kHz, the EC 5's measurements confirm what its design philosophy promises: a preamplifier that adds nothing to the signal and removes nothing from it.

The dual-mono layout and strong channel isolation minimise crosstalk to vanishing levels, so left/right separation remains vivid even at low playback levels — critical for depth perception and the lateral imaging that places instruments convincingly within a three-dimensional soundstage. The EC 5 does not create a soundstage. It reveals the one that was already there.

Signal Integrity at Every Level

Everything about the EC 5 is in service of signal integrity. Unlike volume implementations that change attenuation topology, insert switching contacts, or introduce varying impedance and phase shifts at different settings, the EC 5's constant-topology approach ensures the electronics truly disappear. What you hear is not the preamplifier — it is the recording. The musicians. The room. The microphones. The performances.

After ten years of development, Electrocompaniet has built a preamplifier worthy of that ambition.

Feature Cards

🎛️ Proprietary Volume Control — 1000 Steps, 0.1dB Resolution

A decade in development — a fully electronic volume control that eliminates all mechanical switches, relays, and contact paths from the signal. Constant topology, constant impedance, constant phase behaviour across all 1000 steps. Stable imaging at every listening level.

⚡ Fully Discrete Dual-Mono Pure Class A

Independent power supplies per channel, heavy storage capacitance, and Electrocompaniet's AmpliWire high open-loop-bandwidth topology — delivering 0.0002% THD+N, 113dB SNR, and a frequency response of 0.5Hz to 450kHz.

🎵 Holographic Depth at Every Volume

Constant signal path means imaging cues — timing, phase, spatial positioning — remain stable from the quietest listening level to room-filling volume. Instrument placement, soundstage depth, and holographic presence preserved intact at every setting.

🏆 Ten Years of Painstaking Development

The EC 5 is not an iteration. It is a redefinition — the product of a decade of engineering commitment to the ultimate expression of preamplifier purity, honouring Electrocompaniet's classic design aesthetic with truly meaningful technological advancement.

Editorial Blockquote

"The ultimate expression of preamplifier purity has arrived. After ten years of painstaking development, Electrocompaniet unveils its revolutionary EC 5 — a masterpiece that redefines signal integrity." — Electrocompaniet

At-a-Glance Bullets

• Stereo reference preamplifier — fully discrete, dual-mono, pure Class A throughout
• Proprietary fully electronic volume control — 10 years in development
• Volume: 1000 steps, 0.1dB resolution, –100dB to +20dB range — no mechanical switches or relays
• Signal path always a fixed length through volume control — one resistor
• Proprietary fully electronic input selector — no mechanical switches or relays
• 4 × balanced inputs per channel — 2 × single-ended inputs per channel
• 2 × 12V trigger inputs — selectable IR sensor — Ethernet for app control & firmware updates
• 2 × balanced outputs per channel — 1 × single-ended output per channel
• 1 × balanced tape/rec output per channel — 1 × single-ended tape/rec output per channel
• 3 × 12V trigger outputs — 1 × IR output
• Input impedance: 47kΩ — Output impedance: 22Ω
• Maximum voltage gain: 20dB
• Maximum input voltage: 10Vrms — Maximum output voltage: 10Vrms
• Channel separation: > 120dB
• THD+N: 0.0002%
• SNR: 113dB (ref. 1V, 20–20kHz, A-weighted)
• DC output voltage: < 1mV
• Frequency response: 0.5Hz–450kHz
• 2 × 80VA toroidal transformers — 15,000µF storage capacitance per channel
• Fully independent power supplies per channel — 3 stages of noise filtering and regulation
• AmpliWire topology — high open-loop bandwidth, low negative feedback
• Direct coupled — no capacitors in signal path
• Bulletproof output stage — drives 600Ω loads and long cable runs
• In-house developed IR remote control — included
• 7-inch IPS colour display — acrylic front panel with integrated volume wheel
• Balance control — source level matching and naming
• Internal over-temperature and DC fault protection
• Chassis separated into shielded upper and lower compartments
• Ground screw connection for external system grounding
• Auto-select 115VAC / 230VAC mains voltage
• Power consumption: 80W idle / < 0.5W standby
• Dimensions (H × W × D): 190 × 470 × 420mm — Weight: 36kg
• Designed and engineered in Norway

Specifications

Technical Data

Inputs

Outputs

Volume Control

Architecture & Power Supply

General

Closing Quote

"The electronics disappear. What remains is the recording — its space, its depth, its truth. The Electrocompaniet EC 5: ten years of development in service of the music."