Heathkit IM-58 Distortion Analyzer

[skidave]

Anyone have any feedback about this Distortion Analyzer? There are a few on Ebay and I was looking for comments. There is also newer solid state version for sale IM-5258.

I'm not purchasing the IM-58 because it is tube based; only because the cost is low and it should do what I need.

Any other suggestions would be appreciated.

Thanks,

Dave

PS...this should probably be in the test equipment category. I though it might get more 'press' here.