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JRDG Company Special – Model 125

Model 125 (2013-present)
Retail price in 2024 in the Netherlands 5.400 euro

A replacement for the 102, the 125 is a 100W class D stereo amp, based on the most recent ICEpower technology (250ASX2 module).

rowland-125-02_550pix

Rowland-Capri2s-125_550pix IMG_7554

Rowland-Capri2s-125_550pix IMG_7461

Model 125 and Capri s2 during a test in my listening room. In short: like the 102 the 125 is much more powerful than it looks. The 125, however, sounds bolder and timbrally more natural than its predecessor the 102.

Model 125 extensive review

rowland-125-in-avalon-setup-2_550pix

Model 125 driving Avalon Transcendent speakers and fed by a dCS Vivaldi system and a Capri s2 preamp during a Munich hifi show.

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jrdg_carpi-s2-and-model-125-clean-2_550pix

Capri s2 on top of Model 125

Rowland-Capri2s-125_550pix IMG_7456

rowland-125-0928jrdg_carpi_m12508_550pix

rowland-125-rear-l_550pix

rowland-125-0928jrdg_carpi_m12510_550pix

rowland-125-inside-0928jrdg_carpi_m12521_550pix

rowland-125-inside-0928jrdg_carpi_m12520_550pix

rowland-125-inside-0928jrdg_carpi_m12519_550pix

Model 125 Features

MACHINED ALUMINUM CHASSIS
Precision-machined from a solid block of aircraft grade 6061-T6 aluminum, provides exceptional thermal heat transfer/dissipation, RFI/EMI shielding, and resonance control.

BALANCED TOPOLOGY
Inherent cancellation effects of balanced topology implemented throughout all power and input/output circuits ensures greatly reduced distortion and noise under dynamic signal conditions.

HIGH-PRECISION SURFACE MOUNT COMPONENTS
Extensive use of Lead (Pb)-free, low-temperature coefficient, active and passive surface-mount components results in significantly smaller loop areas, reduced circuit capacitance and inductance, and introduces less noise than conventional leaded components.

TEFLON COATED WIRES
All signal carrying input and output wires are Teflon coated, also for low dielectric energy storage, further ensuring that each audio note reproduced naturally decays into the deeper silence of the music.

TRANSFORMER-COUPLING AND ISOLATION
Transformer coupled input circuitry provides universal component compatibility and virtually eliminate ground loop noise and RFI/EMI. Transformer coupling ensures identical amplifier overall gain when using unbalanced input adapters.

HIGH-EFFICIENCY SWITCH-MODE POWER SUPPLY
Highly efficient, compact, lightweight, switch-mode power supply provides optimum voltage regulation for all circuits and operating conditions and allows for quiet operation over a wide range of AC mains power sources.

PARALLEL BINDING POSTS
CE approved speaker output terminals require no tools for secure, low resistance connections, and allow for easy bi-wiring applications.

FLEXIBLE 15 AMP AC POWER
15 Amp AC power inlet accepts a wide variety of after-market high-performance power cables.

FRONT PANEL STANDBY BUTTON
Illuminated front panel push-button switches the amplifier into standby mode (< 1 watt consumption).

REAR PANEL REMOTE JACK
12V 3.5mm jack on rear panel permits amplifier power on/standby switching in remote and home theater applications.

Model 125 Technical Specifications

Output Power (Stereo)
125 watts @ 8 ohms / 250 watts @ 4 ohms

Output Power (Bridge-tied Load)
500 watts @ 8 ohms BTL

Frequency Response
5 Hz – 130 kHz, -3dB

Input Impedance
40k ohms

THD + Noise
< 0.008% @ 1kHz

Damping Factor
> 500, @ 1kHz

Overall Gain
26

Amplifier Weight
7.8 lbs. / 3.5 kg

Overall Amplifier Dimensions (h/w/d)
2.7” x 13.7” x 7.5” / 68mm x 348mm x 190mm

More Jeff Rowland

Jeff Rowland Company Special Main Page
Jeff Rowland Company Special Power Amplifiers
Class AB vs Class D – Model 525 compared to Model 201, Model 10 and Model 6
Model 125 Extensive review

Also Read

“Digital” Switching Class D or Class T Amplifiers

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