2. amps-preamps
  3. 167765-142071

Embrace The Joy Of Microphonic Equipment

Hi all,
Over the past couple of years I have been listening to a DIY - 4P1L Transformer Coupled Pre-Amp.

Kevin Carter of (K&K Audio) & Radu Tarta of (simplepleasuretubeamps) have both sold these pre-amps over the years.
The 4P1L when used in a transformer pre-amp application (4:1 stepdown) is still sensitive to being VERY microphonic. 

Plenty of ways to reduce & divert vibration but in the end I have come to the conclusion the microphonic nature of this valve subjectively enhances the SQ presentation. The music sounds more dynamic and more sensitive to music changes.

In a nutshell, I like this subjective presentation, goes against my traditional thinking but who cares, sometimes you are better off accepting the valves limitations and working with its natural advantage, Being a directly heated pentode (4P1L) it has a slightly more aggressive presentation and when used upstream of DHT's provide a nice harmonic combination. 

As with all things it's a balancing act, between pleasure & pain. 

Cheers Johno


johno520
rodman99999
6,167 posts
 
       The same reason that some have swapped out quieter resistors, in their phono, preamp and amplifier circuitry, for carbon compositions.   Or: choose Paper-In-Oil for coupling capacitors.   Then: there are those British small-signal valve lovers.

        There's something about that extra warmth they find comforting.  Perhaps: embracing?

        When in the business: I had many customers, seeking that presentation.
johno520 OP
11 posts
 
And include Decca phono cartridges with their added ultrasonic information that gives them a sense of immediacy & pace which can be very addictive to the ear. 

 "It tests badly but sounds great !" 
rodman99999
6,167 posts
 
          So many ways to season one's sounds and please one's aural palate.

                                             What a great hobby!
johno520 OP
11 posts
 
Yes rodman, we are a fortunate lot to have a hobby which provides so much pleasure regardless of background / personal belief.

Ultimately there is no final final arbiter, how u consume, listen, interpret music is up to you.

We are a very lucky country / dear I say world !

Cheers Johno
charles1dad's avatar
charles1dad
10,250 posts
 
'Ultimately there is no final final arbiter, how u consume, listen, interpret music is up to you.'  @johno520 +1.

'So many ways to season one's sounds and please one's aural palate.
                  What a great hobby!'  @rodman99999 +1
Truth.
Charles 


More to discover