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Jeff Rowland Model 201
Jeff Rowland Model 201
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Posted On 10.06.2026
Last Update On 10.06.2026 Jeff Rowland Model 201
Jeff Rowland Model 201 Jeff Rowland Model 201 Jeff Rowland Model 201 Jeff Rowland Model 201 Jeff Rowland Model 201 Jeff Rowland Model 201
Description Original Description is in English, other language texts are translations and can contain errors. EnglishDeutschSpanishTurkish A pair of flawless Jeff Rowland Model 201 monoblock power amplifiers, a design that redefined the application of switching amplification in high-end audio.

A departure from standard implementations, these monoblocks stand out for their chassis, machined entirely from a single block of aircraft-grade aluminum using computer numerical control (CNC) machines. This structure is not only aesthetically pleasing (with the famous front panel featuring millimeter-scale optical refraction), but also provides a fully shielded chamber layout against RFI/EMI interference, while also ensuring damping of structural mechanical resonances and optimal passive heat dissipation.

Technical Architecture and Circuitry: The Model 201 features a sophisticated amplifier section based on ICEpower® 500ASP modules, extensively engineered by the manufacturer.

Proprietary Input Stage: The input signal is processed by custom, ultra-linear coupling transformers, ensuring complete galvanic isolation, an extremely high common-mode rejection ratio (CMRR), and perfect impedance matching with any preamplifier (both tube and solid-state).

Switching Mode Power Supply (SMPS): High-speed regulated and stabilized, it can deliver extremely high instantaneous currents to handle the most complex dynamic transients without suffering the typical impedance sags of traditional linear power supplies.

Damping Factor and Control: The MECC (Multiloop Enhanced Cascade Control) feedback loop corrects the distortions typical of switching output stages directly at the load, ensuring a high and linear damping factor across the entire audio frequency range. The result is absolute control of the low range and complete control of the impedance modules and phase shifts of the most critical speakers.

Technical Specifications:

Continuous Output Power: 250 Watts into 8 Ohms / 500 Watts into 4 Ohms

Frequency Response: 5 Hz – 45 kHz, -3 dB

Maximum Peak Current: 35 Amps

Dynamic Range: 117 dBA

Damping Factor: > 1000 @ 1 kHz

Input Impedance: 40k Ohms (true balanced XLR)

Total Harmonic Distortion (THD + N): < 0.01% (0.1W at rated power)

Connections: Balanced XLR input; Patented CE-approved gimbal-type output terminals (accepts spades)

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