Discrete Opamps & Daugtherboards

None of our daughterboards are potted, you should never have to trash one of these.

In all of our design that uses these opamps we use a footprint that allows a DIP-8 IC opamp to take the place of our opamps or followers. This is for ease of service as well as for experimentation.

The KDJ 3 Class A input opamp Standard Pinout

Supply Current 8ma Supply Voltage Range +/-12v – +/-25v Single piece price $45

The KDJ 4 Class A input stage Class AB output stage Standard Pinout

Supply Current 16ma Supply Voltage Range +/-12v – +/-25v Single piece price $65

Standard Layout Accepts DOA or PDIP 8

The RLA 2 Dual Class A Emitter Follower

Supply Current 2 x 10ma Supply Voltage Range +/-12v – +/-25v Single piece price $45

The RLA 3 Triple Class A Emitter Follower

Supply Current 3 x 10ma Supply Voltage Range +/-12v – +/-25v Single piece price $55

SMT Dual LED Driver

Supply Current 16ma Supply Voltage Range +/-12v – +/-18v Single piece price $30

SMT Single LED Driver

Supply Current 12ma Supply Voltage Range +/-12v – +/-18v Single piece price $25

We gave out about 30 of these at the PotluckCon June of 2008,

The first batch had power via hardwire only.

We gave out about 50 of the second batch (shown) at AES 2008 in San Francisco,

this version has power via hardwire or 5 Pin XLR.

EG = Earth Ground

AG = Audio Ground

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We have used a couple of these with Elpac

Wall warts, these don't have 48 but they work OK

for testing and utility boxes. I have a couple of Cans headphone amps on these

and a -10 -> +4 stereo bump box.