BLOCKAUDIO — Amplifiers

MONO BLOCK SE

A monumental monoblock amplifier delivering pure, uncompromised Class A power.

Every musical performance is unrolled with absolute authority, immense scale, and crystalline transparency. The MONO BLOCK SE stands as the pinnacle of heavy-duty engineering from BLOCKAUDIO, demonstrating what is possible when design constraints are entirely Cast aside in the pursuit of sonic perfection. Crafted in the Czech Republic, this massive power amplifier functions as an immovable foundation for your high-end audio system. It rejects the shortcuts of modern mass production, employing an entirely discrete, wire-free signal path inside a housing machined from solid aluminium plates. By running up to 200 watts in pure Class A, it ensures your loudspeakers operate entirely within their most linear region. The resulting performance balances ferocious dynamic grip with a delicate, ghost-like black background, resolving the age-old tension between clinical detail and organic musical beauty.

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Key Features

Pure Class A operation

Delivers up to 200 watts of continuous, ultra-linear Class A power into an 8-ohm load for artifact-free high-frequency response and complete fluid musicality.

Wire-free mechanical architecture

Utilises smart printed circuit board layouts that allow the shortest possible signal and power paths without a single internal hookup cable.

Monumental power reserve

Anchored by a massive, mechanically decoupled 2500 VA shielded toroidal transformer and an enormous 500,000 uF audio-grade capacitor bank.

Absolute loudspeaker authority

Boasts an extraordinary damping factor exceeding 5000 across the entire audible spectrum, maintaining total control over challenging low-frequency driver cones.

Advanced thermal stabilization

Power transistors are mounted onto a solid copper plate to eliminate micro-vibrations and facilitate instantaneous heat transfer to the heavy outer heatsinks.

Intelligent efficiency management

Features a user-selectable Eco and Auto-Eco bias mode that scales down energy consumption during periods of inactivity without sacrificing peak performance readiness.

Chapter 01

Structural Philosophy

The construction of the chassis is an exercise in absolute isolation. Built entirely from 18 mm thick milled aluminium plates, the physical enclosure acts as a mechanical shield against external interference. The giant 2.5 kVA toroidal transformer is entirely isolated within a suspended housing, ensuring that mechanical hum never bleeds into the delicate input stages.

Chapter 02

The Purest Path

The internal audio circuitry completely bypasses integrated operational amplifiers, relying solely on hand-selected discrete components. A differential JFET input stage flows seamlessly into a MOSFET voltage amplifier and a heavy-duty bipolar output stage. Coupled with a precise DC servo system, this eliminates sound-degrading capacitors entirely from the direct signal path.

Chapter 03

Listening and Realism

On the test bench and in the listening room, it behaves like an immovable force. It imparts no false colorations or romanticized warmth, instead presenting an incredibly deep, front-to-back layered soundstage. Transient responses arrive with breathtaking speed, making older recordings sound wide open and free from congestion.

Specifications

Cont. RMS Output Power280 W into 8 Ω, 500 W into 4 Ω, 850 W into 2 Ω, Class-A Portion: Up to 200 W into 8 Ω

DistortionTHD+N <0.01 % at rated power, min. 0.002 %, IMD <0.003 %

Frequency ResponseDC – 300 kHz ±3 dB, DC – 20 kHz ±0.01 dB

Signal/Noise Ratio120 dB A-weighted, 117 dB unweighted (related to rated output power)

Damping Factor at 8 Ω>5 000, DC – 10 kHz

Output Impedance<0.002 Ω, DC – 20 kHz

Slew Rate>100 V/μs

Capacitor bank450 000 µF

Voltage Gain+26 dB (Normal) or +20 dB (-6 dB), user-selectable

Input sensitivity2.25 Vrms at +26 dB gain

Input impedance20 kΩ Balanced, 10 kΩ Unbalanced

Inputs1 Balanced/XLR, 1 Unbalanced/RCA Furutech FP-908-R

Outputs2 pairs binding posts Furutech FT-816-R

System Remote ControlYes*, Neutrik RJ45

Power Consumption1 200 W max, 450 – 500 W at idle, 50 W at idle ECO Mode, 0 W in Standby

Mains Voltage230 / 115 V AC ±10 %, 50 – 60 Hz (factory pre-configured)

Operating temperature+15 to +35° C / +60 to +95° F

ECO mode oper. temp+15 to +40° C / +60 to +105° F

Dimensions500/19.7(w) × 280/11.0(h) × 535/21.0(d) mm/inch

Weight81 kg / 180 lbs., shipping weight ~100 kg / 220 lbs.

ColorVarious RAL colors available