Difference between Siemens CCa & 7308

I have them both and feel that the 7308 tube offers most of what a CCA has at less money, but as always, tubes are very system dependent.

I'd opine that in most systems a good 6922 or 7308 will suffice. To fully appreciate the nuances of Cca, the other system components must be a very high level.

I use a pair of Cca in what many users would call a reference phono stage. Yes, and as Grant says, the presentation is more refined and the imaging is better but there is a price to pay for this.

I think most users would be totally satisfied with a high quality Amperex 6922 or Siemens 7308.

YMMV

Hello!

Today after 5 years which I use two Amperex USN 6922 in my ARC SP-9-MKll preamp i decided to changed among these Telefunken 6DJ8/ECC-88 NOS 100% matched trough my Hickok 539c calibrated tube Test under "Test Load" operation..as you may see at my added link from Picasa (Trusting that all of you will be able to open my link!), as I'm since 1992 a pensioner my gifted ATC SP-9-MKll was received in 2002, this month & immediately exchanged the "Chinese" fitted 6DJ8 tubes, for such NOS Amperex USN 6922 ones when I hear each day 10 hours nominaly...till today still sounding those Amperex ones...but...I think that is time to be changed...my power is also a gifted Dynaco ST-70 from 1990 made by Panor series ll the both units was acquired by my passed away best audiophile buddy during the same day from USA...because last week I change all the tubes in my Dynaco power...today I decided to do the same with my preamp.

Seems me that some of you are really "Gurus"...so please inform me your opinion on these Telefunken tubes & if will live another 5 years?.

http://picasaweb.google.com/Alex.Cozac/TelefunkenEcc88Tubes

Thanks so much for your noble effort with me!

Peace,

Alex!