Audio Systems: Home amp hook up

Question
Hi..I have two, (2) channel power amps, 1 is a hafler dh500 that I want to drive my pioneer hpm 150's then other is a hafler dh220 for my jbl 4312's and I have a hafler 110 pre amp..how..or is it possible to connect both amps through this pre amp for 4 channel. .speakers are not bi-amp'd..only 1 post for pos.& neg.thnxs for your time. .mike

Answer
Sure. It is easy.  If the Hafler preamp does not have two outputs you can use a cable splitter to give input to each of the amps.  Two of these will do the job:

http://www.parts-express.com/rca-y-adapter-2-female-to-1-male--240-127?utm_sourc

If you wanted to get fancy and have independent control over loudness adjustments to each channel you could add this little mixer or one similar to it - you can find several online - for gain settings and adjustment:

http://www.zzounds.com/item--RLLMX51S?siid=173429&gclid=CKjv47fGpMUCFVc2aQodfGYA

Since the Hafler amps do not have gain adjustments on the front end and depend on the preamp for gain setting you may want to adopt the mixer idea.  ALso, the sensitivity of the speaker pairs are different; another reason for gain adjustment capability.

The Hafler amps are wonderful devices and give good sound.  You'll have a good system.

Hope this helps.