Impedance Question?

And of course I'm talking tube pre and ss amp combo.  Hope this helps!

So are we talking an impedance between 100-400ohm or higher for pre amp output impedance?  I think a range would help me understand.

Toddverrone - I read that thread and tried to figure it out...LOL

Others have had issues regarding impedance. If the amplifier input impedance is 10k, it is really only suitable to match to a solid-state preamp. With a tube preamp, it can work, but you may start to see weak bass/midbass (among other issues). Look for a higher impedance amplifier. For example, the Parasound A21 has input impedance of 33k for RCA and 66k for balanced. I have seen other amps with input impedance of even 100k or 200k.

So I had this 10k (Symphonic Line RG1) hooked to a Cary (SLP-03) 500ohm and yea I lost some bass/midbass for sure and couldn’t figure it out. However I’ve heard the SL hooked to a SLP-98 (800ohm) and it sounded way better, So I’m trying to match a pre with this amp and need all the help I can get.

Would a pre that has 600ohm -<1Kohm be safe to match?

And right now I'm using a pre that has 100-300ohm and can't figure out which is sounding better.....LOL  This damn hobby can drive me nuts at times but I still love it!

Thank you all for your help BTW!

Ben

OK so I got an email back from Rolf at SL and he suggest staying 100-300ohm.

Cary says that on the SLP-98 in the manual 800 but on the item page it says 440. LOL

OK thank you guys!! So I was discussing with Dan ModWright about his 2 preamps and he said either of his would work LS36.5 110ohm and the LS100 300ohm.
Do you guys agree and feel that those pre’s will match up with 10k input on SL RG1?

And that is why I'm leaning towards a direct coupled SLP-98 with some 50's JAN tubes.

Yes it's 10k according to SL. So that's only down 3db at 3.18hz?  I can live that if so....LOL

I’m curious to know what these issues are with direct-coupling are since I may go this path with the SLP-98.

Great info here fellas! Keep it up!

Ben

Yes indeed! I've learned much from this thread.