Rotel RB-990BX
The RB‑990BX is a power amplifier from Rotel's separates line. It puts out 200 watts per channel into 8 ohms. Documentation on this model is sparse, but a few solid facts survive from period sources. Audio (October 1994, p.127) noted the amplifier's high peak‑current output, a design trait Rotel emphasized across its 1990s separates. A 1993 trade listing gave the full specs: 0.03% THD, frequency response 4 Hz - 100 kHz (±0.5 dB, - 3 dB), signal‑to‑noise ratio 120 dB (IHF A), damping factor 1,000 into 8 ohms, and dimensions of 17⅜ × 4¾ × 14¾ inches. Weight was 32.5 lb. The original retail price was $1,100.
A contemporary review on the sibling Rotel 990 page called the RB‑990BX "a sensational amp." Its high current capability and relatively modest price made it a strong contender in the 200‑watt class of the early‑to‑mid 1990s.
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