I use biwired Venustas in a very high resolution system. They may be too laid back for a tube pre/amp combo. You might want to consider something in the Nordost family, e.g., SPM or Valkyrie, which might be more compatible with your electronics. Just one man's opinion.
My System:
Wyetech Opal Pre - Krell 300cx amp - Dodson 218 DAC - CEC TL-1X trans, RAM modded - Von Schweikert VR5 HSE spkrs. Valhalla, AQ Sky IC's, Stealth Sextet digicable.
My System:
Wyetech Opal Pre - Krell 300cx amp - Dodson 218 DAC - CEC TL-1X trans, RAM modded - Von Schweikert VR5 HSE spkrs. Valhalla, AQ Sky IC's, Stealth Sextet digicable.