These are the best amps. they can be used for stereo music and electric guitar, acoustic Flat Top or Classical Guitar, harp. The design is simple and well thought out as far as the electronics like MacIntosh Amps. The JBL 216 is very heavy and sounds Fabulous. Made in the 1957 Screams Quality!! containing a classic Williamson push-pull amplifier offering 10 watts from a 6V6 output stage. The speakers were made by JBL, the original John B. Lansing, himself. The A692 is the original amp design with the 5879 first stage. The 2010 is the second generation amp with the EF86 first stage. These were originally sold in the 1960s as monitors for matching Ampex tape recorders. Although they only extend down to the 60-80Hz region, this is a true entry-level high-end component and a real sleeper. The sound quality is easily equal to a set of preamps, amps, and speakers that might otherwise sell for up to $2,500. The amp is relatively unique in that its entire tone compensation network, including the bass/treble control, is in the negative feedback loop.
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