Please tell us about your experience once the tubes arrive.
To my surprise items i have ordered from AliExpress arrive almost as fast as USPS.
It could very well be that Linlai sells wholesale to manufacturers.
Got them in. Unfortunately, there was no infosheet or indication on the boxes regarding the transconductance of each tube. Supposedly, they should have been a quad matched.
I threw on the first pair and the center image was way off-center and the soundstage was really withdrawn, which may indicate a non-matched pair. I took these out after 20mins. The second pair I threw on appear to be matched, soundwise, as the center image was where it should be and the soundstage was way more normal. Initial impressions on my Susvara, neutral/slightly warmish. Subbass is nicely extended on my one of my sub-bass test tracks (see below). Initial, impressions on the second pair are good so far (1.5 hrs in). Still, I feel I get more punch from a proper speaker-ss amp with my Susvara. Indeed, the bass on Massive Attack's track "Protection" is on the lighter side with the Susvara. Supposedly, the soundstage will fill out as the tubes burn in. I feel these are good value at their sale price (~$50/matched pair), especially after listening to a pair of Tung-Sol 12SN7 bgrp's before these tubes. I still want to take these to someone with a tube tester to get their readings.
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EDIT: It seems that three out of the four tubes sound the same, so one tube appears to be faulty. I want to find a tube tester to check on all of them, especially the suspected faulty tube.
EDIT2 (last listen around last week of Aug. 2024): Avoid. They are
crap. Good pair starts shorting out after 30-60mins. One of the tubes is definitely not matched (extremely low volume compared to the other three. No spec sheet/testing results included in this supposedly quad matched set. No confidence in seller. As for the sound, just okay. A decent NOS pair is much better.
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Let's say that the shipper did not treat the package gently (see below). Thankfully, the tubes were securely packed and, based on outward appearances, they looked fine. Of course, such rough treatment could've rattled something internally.
Other descriptors for these tubes (Linlaitube 6SN7): black T-plates, gold-plated pins, ST bottle, dual(?) mica, dual UFO getters.
Pics below (attn fellow LG owner,
@Ham Sandwich ):
