====== replacement/substitute parts ======


**For replacement/substitute parts, [[http://www.ladyada.net/forums/viewtopic.php?f=12&t=4610|see this forum topic]] ** 

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=== Here's some results distilled down for ya... ===

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LadyAda ships with these replacements, with no noticeable sound differences
  * 733p instead of 733ap   
  * BA6110 instead of BA662a

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SubAtomic has done some analysis of these, and has found BA6110 to be only slightly different, yet perfectly acceptable 
(perhaps even more desireable:  it produces the exact sound only a little louder, which can be a useful thing to slightly overdrive the mixer output for a little distortion)..
  * high beta 733p and low beta 733k instead of 733ap    ([[http://www.subatomicglue.com/x0xl0g/733k-analysis/index.html|analysis]])
  * BA6110 instead of BA662a ([[http://www.subatomicglue.com/x0xl0g/ba662a-analysis/index.html|analysis]])

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MomeRath reports that replacing these causes no sound difference:
  * Using NTE44 instead of 2SC2291
  * Using 2SC945P for 2SC536F  (LoopStar and danyool001 reported this as well)

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Unverified (these may or may not sound the same, please do testing and post results!)
  * J201 for 2SK30A 
  * lm13700 for ba6110
  * nte42 for 2SC1583
  * lm358 for an6562 (possibly also LM358N, NTE928SM, **NTE928M**, NJM2904D)
  * NTE85 for 2SC536F (possibly also NTE289)
  * NTE1465 for LA4140  (possibly also NTE165)

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If you find other substitutions that still maintain the original sound, please post your results in the above format...