Pass amps have low sensitivity but also have below average input impedance which limits the preamp choices, particularly passives. Gamut amps can be adjusted by the dealer.
The Promethius TVC's (am I spelling that correctly?) are a bargain but don't have features of the Bent Audio TAP or Placette. You also should have sources over 1K output impedance to match well with these. I also suggest using XLR IC's with passives but not mandatory.
What voltage does your CDP put out? The "standard" is 2V but some can go as high as 6.
The Promethius TVC's (am I spelling that correctly?) are a bargain but don't have features of the Bent Audio TAP or Placette. You also should have sources over 1K output impedance to match well with these. I also suggest using XLR IC's with passives but not mandatory.
What voltage does your CDP put out? The "standard" is 2V but some can go as high as 6.