• Hello and Welcome to HiFiVision.com - an online community for the home entertainment and tech enthusiasts!

    If you would like to ask a question, participate in a discussion and view attachments please Register yourself.

Is the word "tube" misused?

Rega

anm

Well-Known Member
Joined
Sep 6, 2008
Messages
6,136
Points
113
Location
New Delhi, India
I come across products that say "tube based". For example DACs, active crossovers.
What is the role of "tubes" in them? Is it misuse to misguide normal user making him think "oh it has tubes inside it, it has got to be audiophile grade"?
 

reignofchaos

Well-Known Member
Joined
May 12, 2008
Messages
2,519
Points
113
Location
Bangalore
I come across products that say "tube based". For example DACs, active crossovers.
What is the role of "tubes" in them? Is it misuse to misguide normal user making him think "oh it has tubes inside it, it has got to be audiophile grade"?

Not sure about active crossovers but there are very many DACs that use a tube output stage. The basic idea is that the output of the DAC needs I/V (current to voltage) conversion and initial amplification to the nominal 2V that most sources output.

This can either be done by a tube stage or a passive resistor network or a discrete transistor output stage or in most entry level sources - opamps. What is best? Depends upon a lot of things - including the implementation. A well implemented opamp output stage will beat a mediocre discrete output or tube output stage.
 

anm

Well-Known Member
Joined
Sep 6, 2008
Messages
6,136
Points
113
Location
New Delhi, India
roc - I have purchased a lyrita pre amp recently. it is not currently in use - hope I will learn from you in heavily modding it.

Any idea how good is it's power supply is? Can I use it for a DAC as well as pre amp?

The one I have doesn't have phono - and there is no way I can set balance of left right, or boost treble or bass.
 
Top