2. amps-preamps
  3. 192332-179657

Benchmark LA4 vs Linear Audio Tube microZOTL Preamplifier (Level 2)

I have enjoyed my LA4 preamp, but I want to see if a quality tube preamp would be more to my liking. I have ordered a LTA MicroZOTL Level 2 and it should be here in a few weeks.

My current set up:

Acoustat 1+1 with a SPL Crossover and dual Rhythmik F12SE subs

Innuos Pulse paired with an Innuos Phoenix USB

Bricasti M1S2 DAC

Marantz 8003 SACD (rarely used)

Technics SL1500 turntable with AT VM540ML cart upgraded with a RigB body

Pass Labs XA 25 power amp

Upgraded, but not excessive, cable

I have a month to compare the two preamplifiers and decide if I should make the move to the dark side (tubes). Everything I have read suggests the MicroZOTL L2 should improve stage presence, separation, and depth without significant detail loss. I do 95% of my listening through Qobuz and Sense with the rest from vinyl. The SACD player is only used for the occasional SACD not offered as HD through Qobuz.

Prior to settling on the LTA I listened to a used Electrocompaniet EC 4.8 Mk2 (had not settled on trying tubes yet.) (poor detail when compared with LA4 and narrower soundstage).   I also wanted to try a Pass Labs XP 22, but could not find a used one to try at home (also prior to the tube exploration).  I auditioned a used ARC 5SE (decent soundstage, but suppressed high end and the bass was underwhelming). 

I am looking for any guidance or suggestions the Agon community might have for me.

Thanks in advance!

Ralph

thriftyaudio
thriftyaudio's avatar
thriftyaudio OP
75 posts
 

@yyzsantabarbara Thanks for the question. I always value your observations.

The LTA with just the base tubes was an improvement over the LA4. May have lost a touch of the high end, but on the whole the details were essentially the same with improved soundstage. With the upgraded tubes (Ray Reserve and Gold Lion) the high end details matched the LA4 and the soundstage improved some more. 

I liked the LA4, but the MicroZOTL Level 2 match it in details while improving soundstage and separation. I find the LTA is on much longer during the day with me and with my wife. No regrets.

I have a question for you regarding Network Switches. Do you have any experience or recommendations with them. Recently added one ($100 total with d-link dgs 105 with an ifi power 5v psu) as suggested by Network Acoustics (Tempus) as a trial run. I liked the change. Trying to more research before making the plunge.

 

bluethinker's avatar
bluethinker
245 posts
 

@thriftyaudio - It is fantastic you are enjoying the LTA preamp so much. I also love mine. The company is always such a pleasure to communicate with. It’s obvious they love music and that passion comes through in their products. 

thriftyaudio's avatar
thriftyaudio OP
75 posts
 

@bluethinker I agree. I have reached out to them regarding a couple things. Never problems, just curious questions, and their responses have been timely, pleasant, and extremely helpful. If I wasn't so happy with my Pass XA-25 and my Bricasti DAC, I would definitely consider LTA's offerings. They look intriguing. 

bluethinker's avatar
bluethinker
245 posts
 

@thriftyaudio - Same! I have other amps and a DAC I’m very happy with. But I’d consider an LTA power amp to pair with their preamp at some point in the future. They are just one of those companies you want to support based on quality of product, superior support, and their friendly attitude towards customers. It’s a nice American-made hi-fi story. 

yyzsantabarbara
5,021 posts
 

@thriftyaudio Thanks for the feedback on the LA4 vs LTA. I think I will get a tube preamp near the end of this year. One where a home trial is provided. I wanted to ask you my prior question so as not to waste anyone’s time.

With regards to the network switches. I am a bit of a heretic on this site when it comes to digital streaming. I am of the opinion that whatever is upstream of my fibre optic MOAT does not matter.

I wrote a post on the DACs section of this site regarding the 3 network switches I use to include fibre just before my 3 DACs. You should read a few of the discussion points before my comment to get some context.

https://forum.audiogon.com/posts/2591024 (this link does not bring the correct post to focus)

The posts in question are on page 8 with a start date of

 

 

 

 

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