JBL 2902

The JBL 2902 is a professional power amplifier from JBL's Professional Series line, and the record on it is thin. A 1980 issue of Modern Recording reported on JBL's Cabaret Series of portable speaker systems, a separate product line from the 2902 amplifier (Modern Recording, April 1980, p.34). What's consistently documented across every source that mentions it is the headline number: 575 watts per channel into 4 ohms. That figure appears in the product titles of used listings, in the B&H Photo product page, and in the manual database entry — all in agreement, which is about as solid as it gets for a model this sparsely documented.

Beyond that single specification, almost nothing is captured in the available record. No production years, no original price, no dimensions or weight, no frequency response or distortion figures. The manual exists — a copy is indexed on ManualsLib — but its contents beyond the 575W@4Ω rating weren't captured in the research. The amplifier was clearly built for professional use, as the "Professional Series" designation and the listings on pro-audio resale sites suggest. It shows up occasionally on the used market, sometimes described as mint condition, which hints that surviving examples are treated with some care by their owners.

What we know, in short:

- **Type:** Professional power amplifier

- **Power output:** 575 W per channel @ 4 ohms

- **Series:** Professional Series

- **Documentation:** Service manual exists (indexed on ManualsLib); contents beyond the power rating not captured

If you own one and have the manual, the Archive would welcome the missing details — dimensions, weight, input sensitivity, damping factor, and the like. For now, this page is honest about what the record shows: a capable, high-power pro amp from JBL, remembered mostly for that one impressive number.