Recent content by David Ling

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Which iDSD amp is best and most powerful without DAC as my DAP has good DAC already. Thanks.

Thanks. You mean the preamplifier at 10K impedance will not work? I think 10K is the minimum they can make.

Thank you. The output impedance of DAC is RCA @ 2.0 Vrms 625 ohm; XLR @ 4.0 Vrmd 1250 ohm. The input impedance of the power amplifier is 22K ohms in parallel with 6 pF. The impedance of the passive preamplifier can be tailor made based on the needs. So what should the impedance of the...

DENAFRIPS has two beautiful preamplifiers but since there is zero control on QUAD 303 and not even the power switch, the preamplifier needs to have an output switch to switch between three power amplifiers connected to it. Otherwise my speakers will be on whenever I turn on the system. So...

Preamplifier for Denafrips Pontus II: Hello, I bought Denafrips Pontus II two years ago and initially I use it with my headphone system. Excellent DAC, sweet and airing particularly with vocals. Now I use it for my QUAD 303 power amplifier to drive my speakers. I currently use my headphones...

Thanks! What do you mean by “out of phase”?

Both headphone amplifiers can function as preamp this way.

Just like this.

Yes, it doesn’t. I just used one of its SE headphone output jack in the front to connect to my amplifier. Same to the Bottlehead Crack. Both worked very well except both do not have remote volume control.

Preamplifier means: My DAC to V280 to QUAD 303. So V280 will function as preamplifier for volume adjustment for QUAD 303. 303 is a power amplifier and has zero control on it and not even a power switch. Its match preamplifier is QUAD 33, which is too old to connect to the DAC and CD without...

Anyone has any suggestions how to add a remote volume control to V280?

Right! I like both especially my V280 very much. I also used V280 as my pre-amp for my QUAD 303 to drive the LS 3/5 a speakers. Only upgrade if possible is to add remote volume control to it!