Boulder EA-230
Little is documented about the Boulder EA-230. What survives is one directory entry. In HI-Fi-Stereo-Buyers (1988, p.66), the EA-230 appears right after a more powerful amplifier and is described as the same unit except for 30 watts per channel and a conventional power supply. So it was a 30 W/ch power amplifier built along the general lines of the amp listed above it, minus that amp's toroidal transformer arrangement.
That is almost the whole contemporary record. The sources we have give no production years, original price, detailed specifications or full review. The EA-230 is a line item in a late-1980s equipment directory. It was a real Boulder model, and it left very little behind.
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