Best match with Proac Response Series

Hi:

I used to own ProAc Response 2 speakers. The following electronics worked extremely well with these particular speakers (this is the configuration a local audio dealer - Audio Center in Deerfield Beach, FL) whose opinion I trust recommended to me):

SUBWOOFER (optional): Vandersteen 2WQ (ideally, stereo pair);
AMPLIFIER: Audio Research VT-100 mk. 2 with stock tubes;
PREAMP: Audio Research LS-15 (LS-16 is also probably a good match; sound can be fine-tuned by replacing stock 6922 tubes(4) with NOS tubes; talk to Kevin Deal at Upscale Audio for particular recommendations once you have allowed your final system configuration to settle in;
CABLING: all Cardas Golden Cross interconnects and an internally bi-wired length of Cardas Golden Cross speaker cables (they complement the Audio Research gear perfectly);
SOURCE: as per your tastes

All of this equipment has been superceded by "newer" versions, and is thus available at great prices (I believe they represent lasting value, because of their great build quality, inherent musiciality, and probably resale value not far from your probably used purchase prices).

Hope this helps!

Another option that I heard with ProAc Response 2.5 speakers that worked very well was:

SOURCE: Audio Research CD2
PREAMP: Audio Research LS-15
AMPLIFIER: Audio Research VT-100 mk. 2
CABLING: all interconnects were Nordost Blue Heaven and speaker cabling was internally bi-wired Nordost Blue Heaven.

The character of this system was much more light and airy than the previous setup I recommended (which was much more centered around the midbass and midrange).

My personal preference was the previous setup (demo source at the dealer was Theta Miles CD player and all interconnect was balanced).