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Amp for lightspeed attenuator? = $1000 used

I recently bought a lightspeed attenuator from the classifieds. It's very clear. However, my current amp has an input impedance of about 10K and the lightspeed recs seem much higher than that. I'm curious how much difference there is if I do what I'm supposed to.

Does anyone have recs for 2-channel (or monoblock) amps that are known to play nice with this passive? Ideally $1000 or less used.

Thanks!
dddrrreee

Showing 5 responses by dddrrreee

dddrrreee OP
38 posts
 
George: thanks for all the insight. I can't seem to find the burston 100 anywhere --- would a musical fidelity x-dac tube buffer work also? There's one in the classifieds now: http://app.audiogon.com/listings/musical-fidelity-x-dac-v-3-tube-stage-buffer

Or are there other tube buffers you consider reasonable for not messing about with the signal?
dddrrreee OP
38 posts
 
Thanks for all the amp pointers!

I'm having a hard time tracking down the older recommendations. Does anyone have experience with Muse 150s or with marantz ma-700 monoblocks?

Again, I need something ideally that is more than 100W @ 8ohm.
dddrrreee OP
38 posts
 
Thanks for the walk through George. I'm driving the lightspeed using a musical fidelity V-DAC, which is supposed to have an output impedance between 40ohm and 80ohm, which seems to be within the range you mention. (BTW: what is the right email address to use to buy another unit? I sent several emails to the one on your site but never received a response.)

As a complicating feature, I'm using Y connectors to split the lightspeed output signal so I can feed it to a velodyne SMS-1 bass management unit (which I use to drive two subs).

Poprhetor: I should have mentioned that I don't have high efficiency speakers (recommended 100-150W @ 6ohm) so it doesn't seem that the jolida's would work. I'll troll through the huge lightspeed thread for amp recs; the problem is that its information isn't so dense :)
dddrrreee OP
38 posts
 
George: the burson 160 is still for sale. Would that work as well as the 100?

http://www.frontendaudio.com/ProductDetails.asp?ProductCode=9999-11288&click=18920
dddrrreee OP
38 posts
 
Thanks George. Since you recommended the burson-100, did you have any thoughts on the burson ab-160? The specs look as you suggest:

http://www.partsconnexion.com/burson/ab-160.html

Input impedance: 500 KOhms
Frequency response: 1Hz (-0.3dB) to 35 kHz (-1dB)
Signal to noise ratio: >120dB at 0dB gain
Output impedance: line out 15 Ohms @ line level
Power dissipation: >10W, internal, regulated power supply
Maximum Output Voltage :12VRMS
Maximum Input Voltage: 6VRMS
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