Choosing DAC I/V transformer

K&K Audio / Lundahl Transformers

Welcome! Need support, you got it. Or share youe ideas and experiences.

Hi all,

I am trying to figure out which Lundahl transformer to use for I/V stage for a AD1865NK. I have a Audio Note Kit DAC2.1 currently. I have replaced the factory transformer with a Stevens Billington TX103 in 1:5 stepup, loaded with 1k at the secondary. This is what I had lying around and it sounds incredible. However, I want to move that back to MC stepup duty and need to replace it.

I have been googling and seems like many ppl uses LL1674, some have LL9226, and going through the Lundahl datasheets, but there are also a few others that can be configured to 1:4 or 1:5. I would like to use amorphous core for the detailed sound.

LL1674/LL1676 (just ratio difference?)
LL9226
LL1931
LL1684

or should I use something with 1:1 ratio?

The question is, what're the criteria other than the ratio. What else should I look for in order to maximize sound quality? the LL9226 is smaller in size but has lower primary/secondary DC resistance. Does that mean lower loss? but why is it smaller with smaller physical size?

Also, does K&K keep all these in stock? are there lead time to ordering?

Sorry for all the question and appreciate any help.

This post is made possible by the generous support of people like you and our sponsors:

Parts Connexion

Topic - Choosing DAC I/V transformer - jmpsmash 13:38:47 11/10/20 (0)

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

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.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.