[Project22a]

I just picked up a custom built amp on ebay based on the Headwize Single Ended OTL scheme (http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=waarde1_prj.htm) and I was wondering if it would benefit me (subjective I suppose) to run my Little Dot MK2 as a preamp to it, or if it's even safe to do so.
 
The preamp specs on the Little Dot MK2 are as follows:

1. Pre-Amplifier Output Impedance: 600 ohms
2. Pre-Amplifier Gain: 3-10x (also controlled via gain switches)
3. Pre-Amplifier Voltage: 10V RMS
4. Pre-Amplification circuit includes both driver and power tubes

 
The voltage does seem rather high, and I'm not sure what sort of input voltage the Headwize design can tolerate.

 

[Project22a]

Bump.

 

[Project22a]

Bump.

 

[estreeter]

Just try it - I have used several headphone amps as 'preamp' for a number of different integrated amps without a problem - obviously you aren't going to fire the combination up and walk away from it : just plug an old pair of headphones into the socket on your amp and you'll soon know if your 'preamp' is regulating the volume. I never have speaker connected when setting up an integrated amp - thats what Sennheiser made the HD201 for ....
 
Problem solved - next.