Manley Stingray II


Have Siemens ECC81,Siemens 801s,Mullard CV4024 and the stock Electro Harmonix ECC81 tubes.LOVE the Siemens ECC81 tubes.Cardas GR sp cable and Merlin VSM-MXr/MasterBAM.
What other pre tubes can I try that works well in the Manley and that may beat the Siemens tubes ?
bluebull