2. amps-preamps
  3. 150105-87630

Pass amp paired with audio research pre?

 Wondering if anyone has had experience matching a pass labs amp with an audio research preamp. Do they make a good combination?  Thinking  about audio research reference 5SE matched to one of the X series pass amps. I have Harbeth 401.2 speakers...kind regards 
128x128fanotunes
fanotunes's avatar
fanotunes OP
33 posts
 
Gotcha. Attributed to amp or preamp?
wlutke
709 posts
 
Definitely the pre.  I'm using a Herron VTSP 360 now.  Only about 30 hours in and things are sooo involving.  The Xa-25 is super transparent. 
georgehifi's avatar
georgehifi
10,312 posts
 

Pass amp paired with audio research pre?

 Wondering if anyone has had experience matching a pass labs amp with an audio research preamp. Do they make a good combination?
I think it will work great, just make sure the "output impedance" of the AR preamp is at least 10 x lower than the "input impedance" of the Pass amp. (Some Pass amp can be too low for many pre's) .

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 

Pass amp paired with audio research pre?

 Wondering if anyone has had experience matching a pass labs amp with an audio research preamp. Do they make a good combination?
I think it will work great, just make sure the "output impedance" of the AR preamp is at least 10 x lower than the "input impedance" of the Pass amp. (Some Pass amp can be too low for many pre's) .

Cheers George
atmasphere's avatar
atmasphere
11,577 posts
 
I think it will work great, just make sure the "output impedance" of the AR preamp is at least 10 x lower than the "input impedance" of the Pass amp.
The thing to look at is the output impedance at 20Hz, which is often considerably higher than it might be at 1KHz.
More to discover