I just like to thank David Hafler. I keep going back to his equipment. This little preamp is great. He knew what he was doing. That is all
Larry

i'll second that. i have three Hafler pre's and all are sweet. i've never had the pleasure of using any of his amps but i wouldnt pass on the chance.

David Hafler was the man behind dynaco, one of the classic brands of the 50's and 60's.

Which hafler amps and pres are you fellas running?

I have a DH-101.

i've got a DH-101 modded with an external toroidal transformer, a stock DH-110 and a Musical Concepts standard modded DH-110.

I have owned a 110,220,500 and 4-101. plus a tuner. Never had 1 problem with them. Love the sound