1963 Ampeg Portaflex B-12X


Unlike a lot of the Ampeg Portaflex amps, the 25 watt B-12X was designed for guitar rather than bass. It uses a special reverb satellite cabinet with a pair of 4-inch speakers. Unfortunately the reverb isn't currently functioning. The amp also has a vibrato circuit instead of the usual tremolo setup. The tone of this amp actually reminds me of my 1960 Fender Super in some ways. The first channel is fairly bright with spooky sounding vibrato. The second channel is much louder and darker sounding. This is where the advantages of the Portaflex cabinet come in. The lows are very warm and absolutely thunderous, with no rattles from the cabinet or the speaker. Makes me want to get some more Ampeg Portaflexs! Too bad they take up so much space...

Power Amp: 2 x 6L6

Preamp: 5 x 6SL7, 6SN7, 6V6 (reverb)

Rectifier: 5U4

Speakers: 1 x 12" Jensen

Effects: Vibrato

Controls: Channel 1: In, In, Vol, Treb, Bass - Channel 2: In, In, Vol, Treb, Bass, Dimension, Speed, Intensity - Both Channels: Stereo In