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kalee20 · 13th Mar 2018, 1:57 am

Well, in the DAC90, the knob on the side is quite big, it's mounted midway down like you say, but it's the tuning knob! The wave change knob is on the FRONT.

The DAC90a has a small pointer knob on the side, this IS the wave change knob, the one on the front is the TUNING.

The DAC90 underneath has several small holes and two big holes, to adjust the trimmers while in the cabinet and to unscrew the knobs. The DAC90a just has the two big holes.

The DAC90a is an improvement, and just looks nicer as a chassis. And it does not get so stinking hot. However, the DAC90 does perform slightly better!

13th Mar 2018, 1:57 am	#5
kalee20 Dekatron Join Date: Feb 2007 Location: Lynton, N. Devon, UK. Posts: 7,088	Re: Bush DAC 90 and DAC 90A Well, in the DAC90, the knob on the side is quite big, it's mounted midway down like you say, but it's the tuning knob! The wave change knob is on the FRONT. The DAC90a has a small pointer knob on the side, this IS the wave change knob, the one on the front is the TUNING. The DAC90 underneath has several small holes and two big holes, to adjust the trimmers while in the cabinet and to unscrew the knobs. The DAC90a just has the two big holes. The DAC90a is an improvement, and just looks nicer as a chassis. And it does not get so stinking hot. However, the DAC90 does perform slightly better!