You will experience realistic musical performance.

Real Sound Amplifier



The RSA-BW7EX delivers the dynamism of music to you.

The sound of RSA-BW7EX is based on the RSA-777EX, with more expressive power in the mid-low range.

Two key parts researched for BW7

Two key components for BW7

The capacitors developed for the BW7 have excellent properties for low frequency reproduction. The rectifier diodes developed for the BW7 also have an outstanding ability to carry low frequency currents and pass them on to the capacitors. The low frequencies of the BW7 are created and tuned by these two key components.

The rich mid-range and energetic low frequencies, combined with the high-speed sound by the switching power supply, enhance the brilliance of the musical performance and maximize the excitement of listening to music.

The other parts

Other blended capacitors

Direct drive FET

RSA-BW7EX appearance


Maximum output 100 W × 2 (4Ω), 75 W × 2 (6Ω), 50 W × 2 (8Ω)
Frequency response 10 Hz - 30 kHz ±1dB (6Ω, 1W)
Harmonic distortion ratio 0.02% (at 1 kHz, 80% output)
Input sensitivity, gain 300 mVrms, 37.3 dB (at MAX volume, 6Ω, 1kHz, unbalanced input)
Line input terminals XLR input : 1 RCA inputs : 3
Speaker terminal 1
Power supply, other
Power voltage 220V AC,50Hz
Electrical consumption With no signal : 18 W, during maximum output : 180 W (8 Ω, 100 Hz)
External dimensions 350 mm (width) × 95 mm (height) × 375 mm (depth)
Weight 7.0 kg
Included items
Power cord 1
Operation manual 1

* Due to improvements the above specifications and external appearance may be changed without notice.

Related information

Operation Manual