L2 Integrated Impressions?

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Vinnie R.

Re: L2 Integrated Impressions?
« Reply #40 on: 9 Jan 2020, 07:58 pm »
Thanks @matthewpatrick for the helpful post! 

Any other L2iSE upgrades out there who can provide their impressions of the upgrade?  Thank you!

Happy New Year, everyone!

This was just posted to YouTube - I am very thankful to all of Steve's time and effort with this gorgeous video
of his L2i-SE:



https://www.youtube.com/watch?v=n4iuQzJsQwI

 :notworthy: :notworthy: :notworthy:

Vinnie

alex z.

  • Jr. Member
  • Posts: 4
Re: L2 Integrated Impressions?
« Reply #41 on: 10 Jan 2020, 11:00 pm »
Quote from: Vinnie R.
The DHT preamplifier stage in the L2i-SE is very similar in design to the one used in the L2 Signature Preamplifier, but not exactly the same. 

The L2 Signature Preamplifier offers the lowest possible background noise, as it does not contain the L2i-SE's two additional power supplies for the dual-mono speaker output stages.   

Vinnie
Hi Vinnie,

Does it mean that L2i-SE can reach a same lowest noise level when used in preamp mode by switching off the power stage and related supply units inside (AMP off)?

I want to extend my home setup by adding L2i-SE and using it for two possible options:
1. L2iSE as a preamp to drive my current Ayon Crossfire PA (eq. full tube mode).
2. L2iSE as an integrated amp to drive my speakers (native hybrid mode).

Thx, Alex

alex z.

  • Jr. Member
  • Posts: 4
Re: L2 Integrated Impressions?
« Reply #42 on: 10 Jan 2020, 11:08 pm »
Also, it may be interesting for me to test both gears (L2i-SE and Ayon CF PA) for bi-amping my speakers ;)

gene9p

  • Full Member
  • Posts: 405
Re: L2 Integrated Impressions?
« Reply #43 on: 11 Jan 2020, 10:17 pm »
I thought the Dynaudio Special 40's sounded pretty bad with my Lio Integrated. Guess a 15k upgrade was all I needed..lol

Vinnie R.

Re: L2 Integrated Impressions?
« Reply #44 on: 13 Jan 2020, 08:54 pm »
Hi Vinnie,

Does it mean that L2i-SE can reach a same lowest noise level when used in preamp mode by switching off the power stage and related supply units inside (AMP off)?

Hi Alex,

It will be close, but not 100% of the L2 Signature Preamp.  Why?  Because when the AMP button is switched OFF in the L2i / L2i-SE, this is only
disabling the current output stage of the L and R power amplifiers (essentially, grounding out the gates of the current output stage mosfets) so they
do not amplify the signal.  But the power amplifiers' power supplies are still receiving power / kept warmed up.  This way, there are no added
switches in the signal path or power path, which eliminates the influence of any added parts in the signal/power path and maximizes reliability (e.g. one less switch that can eventually fail years from now). 

Having said that, since much less current would be flowing through the power supply for the power amplifiers when they are disabled (they are not driving speakers when disabled), the noise from their power supplies will be minimal, and the L2i-SE makes for sensational preamplifier via its single-ended or balanced preamp outputs.

The L2i-SE gives you the most bang for your buck compared to the L2 Signature Preamplifier, but *IF* you were *ONLY* going to be using it as a preamplifier, the L2 Sig Preamp would still be my 1st choice.  Since you want to use it as both a preamp *AND* an integrated amp, the L2i-SE makes the most sense.

I hope this clarifies things.

Quote
Also, it may be interesting for me to test both gears (L2i-SE and Ayon CF PA) for bi-amping my speakers ;)

If you were to do this, you'd want the gain of the L2i-SE be set when we build it to match that of the Ayon CF PA.  Otherwise, the unit
with the higher gain will dominate the freq. range it is connected to.  For example, if the Ayon has higher gain and you use it for the tweeters
when bi-amping your speakers, the treble is going to be boosted and could dominate (and vice versa)...

You can also use the L2i-SE in a bi-amp system with the L2 Signature Monoblocks!  :drool:
It's only money, after all... :thumb:

Quote
I thought the Dynaudio Special 40's sounded pretty bad with my Lio Integrated. Guess a 15k upgrade was all I needed..lol

Hi Gene,

Lol - It's a totally different story with the L2i or L2i-SE running the show.  I really don't know how any speaker can sound bad with them, unless
the speaker used (and/or the room they are used in) have fairly substantial issues going on.  :o

Best regards,

Vinnie

alex z.

  • Jr. Member
  • Posts: 4
Re: L2 Integrated Impressions?
« Reply #45 on: 13 Jan 2020, 10:49 pm »
Hi Vinnie,

Thank you for the answer... Have you ever tried to source the L2i-SE from the Aurender A30 (from either analogue outputs to L2i-SE or from USB towards VR DAC-2)?

A30 houses the same DAC chipset 2xAK4497 (dual mono) like used in the VR DAC-2, so I would really be interested to compare them for SQ.

I see you mainly use Innuos as a digital source in your demos... Are any other recommendations from you for streaming options to the combination L2i-SE + DAC-2?

Thx, Alex

Vinnie R.

Re: L2 Integrated Impressions?
« Reply #46 on: 14 Jan 2020, 12:29 am »
Hi Vinnie,

Thank you for the answer... Have you ever tried to source the L2i-SE from the Aurender A30 (from either analogue outputs to L2i-SE or from USB towards VR DAC-2)?

A30 houses the same DAC chipset 2xAK4497 (dual mono) like used in the VR DAC-2, so I would really be interested to compare them for SQ.

I see you mainly use Innuos as a digital source in your demos... Are any other recommendations from you for streaming options to the combination L2i-SE + DAC-2?

Thx, Alex

Hi Alex,

I haven't used the Aurender A30.  There are so many streaming options available now and I haven't had time to test them all.  I have direct experience with the Innuos line and they are very impressive units, but I cannot say how they compare to others without doing the direct comparison in my system.

Quote
A30 houses the same DAC chipset 2xAK4497 (dual mono) like used in the VR DAC-2, so I would really be interested to compare them for SQ.

Good question - the d/a chip(s) are only a part of the much larger equation, so it is hard to know how they compare. 

Best regards,

Vinnie