I found the 3011A tuner and 3006A amp together at a resale shop about 6 months ago in Florida. Today, a 3002A pre-amp controller materialized at a nautical resale shop. It made no sense at all. The tuner blows away my Yamaha reciever tuner - both in dynamics and volume output. No adjustments can match the Tandberg. I'm thinking of bi-amping my Klipsch center channel speaker with the amp. I may use the pre-processor to direct a signal from the Yamaha to the center and also a complimentary front channel subwoofer.
The amp tests sound very clear and musical - transparent, balanced, and a little dark. Very nice.