Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

RE: Do tube preamps add or take away dynamics

Think in terms of avoiding info. loss.

Passive control centers exhibit inherently high O/P impedance and poor drive capability. LOW capacitance (read short and unshielded) cabling to the power amp(s) is essential. Notice the lack of flexibility. Also, a pentode voltage gain block at the power amp(s) I/P(s) is helpful, as it allows a high I/P impedance, without adverse CMiller interaction.

An active control center, with or without voltage gain, typically has a lowish to low O/P impedance and decent or better drive capability. Flexibility is present, but "colorations", bandwidth limitations ... may be negatives.

All legitimate options are compromises. Each 'phile decides which way to "jump". We are dealing with yet another perfection is the enemy of the very good situation. A "perfect" solution simply doesn't exist.

Eli D.

This post is made possible by the generous support of people like you and our sponsors:
  Signature Sound   [ Signature Sound Lounge ]

Follow Ups Full Thread
Follow Ups


Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.