[markm1111]

Does anyone know the input impedance value of this amp?

I currently run a CIA VDA-2 dac and VAC-1 psu (output impedance 825 ohm) into a Burson Buffer AB-160 then into a CIA VHP-2 headamp with VAC-1 psu. The loop then goes into a Burson PI-160 integrated to run my Lenehan ML-1 speakers.

The buffer is in there because of the high output impedance of the dac - the input impendance of both the VHP-2 and PI-160 is 20k ohm. I understand the desired ratio is roughly output impedance x 100 < input impedance. With 825 ohm output impedance the required input impedance is 82.5k ohm, which is quite high.

The stated input impedance of the Ming Da MC66-AE (Ming Da's other headphone amp) is 100k ohm, which is why I am hoping the MC84-C07 is the same.

I want to be able to run my AKG K702's off the VHP-2 through the buffer, but use the output switch on the VDA-2 to send to a MC84-C07 to run my Senn HD650's.

I hope that all makes sense and explains why I want to know the impedance.

Cheers

 

[mlantinen]

Looks like:
input Impedance：16-32Ω

 

[markm1111]

I saw the 16-32 Ohm on their website but thought it must have been a mistake, and those figures were actually for the headphone out impedance.

I am new to valve amps - are such low figures common for input impedance?

 

[markm1111]

Well, for those that are interested, I got it straight from the horses mouth - Jennifer at the Mei-xing factory.

Input impedance is 100k ohm, as told to her by the technicians.

Means this little beauty may be on its way to me sooner rather than later.