Amp for lightspeed attenuator? = $1000 used

I'm running the Lightspeed into a Dynaco ST-70 rebuilt by Will Vincent. Bought it straight from him through A'gon for just over $1,100. It has an input impedance of 470K ohms and input sensitivity of 1V. How do those numbers sound?

"Dddrrreee 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).Dddrrreee"
You can get me on "georgehifi at optusnet dot com dot au"

As with any other system active or passive these "Y connectors and active subs" brings in another added equation to the impedance matching, of system compatibility.
If you use active subs, this makes the load to the Lightspeed and the source even more difficult, then I suggest a buffer after the Lightspeed like the "Burson 100 Buffer" which unfortunately is no longer available new, you may find one second-hand or another equivalent that is a pure buffer with no volume controls or selector switching on it.

Cheers George

I use a Lightspeed clone (Lighter Note by Uriah Dailey) with a Rogue Atlas. Not sure about the exact specs but they are working GREAT together.

Be patient and wait for a used Music Reference RM-10 MkII to come up for sale. You won't be sorry.

Dddrrreee, good advice from Clio09 on the Music Reference RM-10 MkII a quite few Lightspeed Attenuator owners have had great success with this amp, saying it's a match made in heaven.
As does the amps Sam Tellig from Stereophile, he uses the Lightspeed Attenuator with his Quicksilver Silver 70 mono blocks and his much loved low powered Sun 2A3 single ended triode monoblocks, and used the words.
"the harmonic presentation was nothing short of flabbergasting. As a former (very poor) pianist myself, I look for the magic of the moment—the sound, not so much the movement, of the notes. I know that, in musical performance, timing is everything. Still..."

Cheers George