Thanks. Wow ... certainly looks the part. I might add i also own an ECBA myself running with the 300B/PX4 & 6SN7 variant. I have been actually using it as a preamp last couple of years. I am on a journey at the moment to find myself another preamp so that i might be able to reclaim the ECBA for it's rightful place and that is as a headphone amp.
If you have time
.. my pre-amp journey thread can be found here
http://www.stereo.net.au/forums/index.php?/topic/61774-valve-preamp-recommendations-please/
But in summary i have heard the following preamps to try to knock the ECBA off it's mantle;
- Octave 300
- Octave HP500SE
- Zesto Leto
- Coincident Statement Line Stage
- Lindemann 830S
- Audio Note M6
- Audio Research Ref 5SE
- Weston Pre
I am about to get the opportunity to listen to a Shindo Masseto next so we will see how that goes.
But of all those listed above the ones i would classify as being "better" than the ECBA as a preamp are;
- Audio Research Ref 5SE
- Audio Note M6
- Octave 500SE
Of these three the Audio Research Ref 5SE sound best in my system. The Audio Note M6 is a fantastic pre - with excellent timing, pace and rhythm - although i certainly wouldn't say it has the "high end" reach the ECBA - in fact not many of them did. The ECBA has excellent high end retrieval and extension. And great "air" - with great natural decay.
Whilst the Octave 500SE is also a good preamp after having heard both the Octave HP300 and the Octave 500SE i have decided i am not a fan of the Octave "sound signature" - a little bit too brooding, dark and veiled for my liking. This is a preamp that i would still encourage you to try - as you might actually like the sound. Has excellent bass detail retrieval though.
I do still hope to listen to a few pre-amps to try to see if i can find something a little bit cheaper than the AR Ref5SE (which retails for approx. $US10k (or $AU18k)).
But getting back to this particular model - the 4-45 - what you are suggesting is that you can have an EC pre-amp as well as an EC amp for 2ch listening - how cool is that. I wonder if Craig is going to release a DAC or CDP next?
EDIT: It just occurred to me maybe the 4-45 could be used with great effect with the AKG-K1000's? I use my K1000's hooked directly into a First Watt F3 replica amp - and it sounds superb. The 4-45/K1000 combo might be an awesome combo also?