Tweakers' Asylum

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Crazy Dave

In Reply to: RE: Burson V5i Opamp Upgrade Report Update posted by Duster on June 30, 2018 at 16:40:01

I have 2 possible suspects for this upgrade. I will have to check and see if they also have solderless slots.

Dave

Follow Ups:

or not - madisonears 18:43:56 07/01/18 (1)
Opamp rolling is fun, and sockets certainly make it easier with far less risk to the PCB. However, sockets are hardly an ideal device, with EIGHT additional mechanical connections in a very sensitive part of a circuit. Gold plate means little, as the primary problem is the additional lead length and the very nature of a mechanical connection.

Inmates are typically obsessed with improving or eliminating mech conns, going so far as to hard wire IC's, speaker cables, and power cords, which is at least inconvenient if not dangerous.

Any additional lead length will add inductance, which could affect signal transmission. PCB designers take care to avoid excessively long paths, including pad spacing to allow shortest possible component leads.

A DIP socket plops eight unnecessary longer leads plus eight mech conns right where they're most likely to have a real effect.

So roll those opamps, have some fun, but when you've finally chosen a winner, lose the socket and solder those babies in. It's not the easiest thing to do, but, with a little patience and some solder wick, it's not impossible and will yield further improvement.

Peace,
Tom E
berate is 8 and benign is 9
- RE: or not - Ryelands 07:16:37 07/02/18 (0)
  sockets are hardly an ideal device . . .
  
  I stand to be corrected but I'd suggest that the sonic degradation caused by a recognised make of turned-pin IC socket (always assuming there are unrecognised makes) can safely be disregarded.
  
  See the data sheets. The added capacitance is negligible, each pin has four points of low-resistance, airtight contact and the added lead length is, when you think about it, very short indeed.
  
  Were I to lash out on Burson op amps, I'd not, given the price, even dream of using them without TP sockets. Ditto for, say, my TDA1541 DAC chips.
  
  That said, I probably agree with you when it comes to conventional DIL sockets.
  
  HTH
  
  Dave

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