I was recommended these tubes http://www.upscaleaudio.com/Russian-6H236922-Type-3_p_49.html so I am wondering if anyone has any experience with these? Also wondering what 6922 tubes people recommend for the most transparent sound? I am new with tubes so I really do not understand a lot about them. Thanks for any help. I have a CJ CT-6 in case that helps. Thank you!