Preamp for Parasound and B&W803d2

This LTA MZ3 is an excellent preamp and also an outstanding headphone amplifier if you ever plan on using good headphones.  Also, you can change tubes to customize the sound to your liking.  
https://www.ebay.com/itm/234750039389

Here’s a review fyi…

https://positive-feedback.com/reviews/hardware-reviews/lta-mz3-preamplifier/
 

Best of luck.

Thank you. 

Topping Pre90.

It's not on the softer side, it's extremely clear and neutral, and it makes my 803 D3s sound fantastic.

Amp is the Vincent SP-331 hybrid.

Just my 2c

Tom

I'm going to recommend something a little different, if you call or email Al at space tech labs and tell him exactly what kind of sound you are trying to achieve he will get right back to you and have a recommendation. Most of his preamps are balanced input and output.