[esw1026]

[size=medium]I have a Pioneer Spec-1 preamplifier, and [/size][size=medium]a pair of Adcom GFA-565 mono power amplifiers.[/size]
 
 
[size=small]The reason why I bought the pair of power amps was to drive headphones through SPEC-1.[/size]
 
[size=small]As you guys know, the Spec-1 doesn't have its headphone amplifier.  A power amplifier should back up the Spec-1 to drive headphones.[/size]
 
[size=small]My rig goes:[/size]
[size=medium]My laptop -> dac -> preamp -> poweramp[/size]
 
I use output of Spec-1 to connect to power amp.  I plugged the rca cables from the spec-1 output to the input of GFA-565 power amp. Is it correct?
 
I got no sounds coming from the headphone jack of Spec-1......
 
I don't know what is wrong.....
 
I couldn't get the answer for this problem from AudiogoN and Audiokarma...
 
Please somebody helps me out.

 

[wuwhere]

You don't need an amp. How is the DAC connected to your Pioneer Spec-1 preamp?

 

[esw1026]

I connect from the output of DAC to the input (Aux1) of Spec-1 preamp.
 
The output of my dac I use is balanced.  Should I use unbalanced outputs to connect with my preamp??

 

[wuwhere]

Yes, try the unbalance first and check if you have sound coming from the hp of the Spec-1.

 

[esw1026]

Thank you for the quick response.  I will check that up.  Thanks again

 

[wuwhere]

By the way, the Spec-1 does not have a balance input.

 

[esw1026]

I ordered a pair of rca female to xlr female cables to check that out.  Thank you anyway.  I appreciate that.

 

[esw1026]

I tried unbalanced input today..... but didn't work.  Do you know any other ways to solve my problem???

 

[wuwhere]

Do you know if the hp out from your preamp works? You can use a different source like a cd player, connect it to a line in and check if there is output from the hp out.

 

[Maverickmonk]

Do you have the tape monitor switch engaged? If I had a dollar for every time I blew my ears out because the tape monitor was engaged and the volume was cranked, and i was fiddling trying to figure out why it wasnt working, I'd have a vintage stereo as nice as yours...nearly

 

[esw1026]

I solved all problems I've had.  Thank you guys all