Audio Research comparison

This thread demonstrates, again, how subjective and system dependent component evaluations in this hobby can be. I own both the LS25 MKI and VT100 MKII versions. I am using NOS tubes in my LS25. I have heard the new version with the FET low level input and 6H30 tubes. Technically, the VT100 MKIII my be better than the MKII, however I found the MKII version to be more musically satisfyiing: to wit, more liquidity and a sweeter top end. In so far as the LS25 MKII is concerned, I think the MKI with the NOS (6H23) equals the MKII version in terms of technical competence but exceeds it in terms of musicality. My observations were replicated by a friend who also had the opportunity to try all the iterations in his home system.

Yes, he was using the NOS 6H23 in both the LS25 MKI and VT100 MKII. Also, He had the LS25 MKII and the VT100 MKIII and liked neither. He claimed that "the magic was missing." He feels strongly that the older versions, with the NOS, were better sounding.

Incidentally, the LS25 MKI with the NOS 6H23 sounds like a different preamp. It became much more powerful, dynamic and robust,with greater slam in the midbass and lower bass. Also, there was greater transparency and richness in the midrange, with a wider and deeper soundstage. In summary, every musical parameter improved, without any downside.

AKnorth:

The orginal LS25 is the MKI.

Thanks

Blues_man:

A RefII and VT200 is an awesome combo. Why would you want to upgade?

Blues_man

My take is this: if you "upgrade" you will enjoy your music less. The enjoyment of the musical experience is the bottom line of this hobby to me. Try the 6H23 NOS in your preamp and you never feel the need to "upgrade"

Good luck.