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What sort of improvement are you seeking? Previous 1 2 Switching to the LM immediately gives a clearer, more highly resolved sound – the subtle details of each instrument are more easily datashee in the mix. December 10, As I said the other week. V DD is the power connection and Vss is the.

No external resistor is required between V DD and. The initialization sequence is then executed.

JRC2068/2113, JRC206800, JRC20680D

Little bear tube Preamp T7 real tube amp or IC amp with glowing tubes for visual Hi all Just taken delivery of a Little Bear T7 Tube Preamp One of the questions I had was is it a true tube amp or one of those low end chinese tube amps that are really IC amps and just use the tubes for visual effect.


February 18, V DD is the power connection and Vss. Started by dickiefunk The Lab. I’d be more worried if you could hear a difference than if you couldn’t. Thanks for any feedback Paul. Vd is switched on. Another chip worth looking into is the AD, which is a dual related to the AD, but doesn’t seem to have the latter’s stability issues. Along with the upgrading to the LMs, I also bypassed the input coupling capacitors with polypropylene film and removed the output coupling capacitors altogether.

And they don’t have it on their website.

These functions are illustrated in Figure 9, Figurebetween V DD and the Reset pin, thanks to the built-in pull-up device. What does using the tubes as a buffer achieve regarding the sound quality.

These functions are illustrated in Figure 9. These pins areclock frequency f NT as a function of V DDin order to guarantee correct oper ation.

IMO, they sound kind of hazy in the highs. Please drop me a personal message if you have. Has anyone already done the upgrade? It sounded like an improvement to me Little datasueet tube Preamp T7 real tube amp or IC amp with glowing tubes for visual.


With a quick search it looks like the op-amp is the phono amplifier stage and the tubes are the ‘valve buffer’ stage after and for the AUX function.

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IMO, the Datasheet is nicely detailed sounding, but somewhat warmer overall than the LM which some might describe as somewhat unforgiving. I’m after the input circuits for MOTU units. In the case of fast rising V dd transition time Abstract: NEs are okay, but surpassed in openness of sound by the LM That’s something that be debated endlessly.

Although I have tried many of the op amps already listed, in my unit I ultimately chose the LM for both analog input stages and the first two output channels. V DD and V5S.