I’ve been testing a pair of standard PSVANE 6SN7 — not the Horizon, not the Summit, just the regular one that costs about what a decent dinner costs
First, the obvious: they’re built quite well for the price, at least as far as I can judge from the outside. Straight pins, tidy welds, mica that sits where it should, and a bottle that doesn’t look like it was blown during a coffee break. What I can’t tell you is anything about the purity of the metals or the chemistry inside — nobody reviewing tubes on a kitchen bench can. Both tube measured well enough that I didn’t have to return it, which is more than I can say for most 1950s pairs bought off a guy whose eBay handle has four consecutive underscores in it.
Sonically, here’s what I hear:
Midrange is quite dry for a tube. Not thin, just short on the wet, dimensional quality you buy tubes for in the first place — though that’s more or less what I expect from new production.
Bass is firm and well controlled. This is where it genuinely competes. It’s tight, it starts and stops when it’s told, and it doesn’t get soft the way some old stock does.
Treble is present but slightly hard. Cymbals come through with a metallic edge instead of a shimmer.
Soundstage is wide but shallow. Plenty of left-to-right, not much depth behind the speakers.
It needs time. The first 30–50 hours are genuinely unpleasant. Don’t judge it out of the box. I nearly pulled mine after one evening.
And now the part that matters. Compared to many old stock tubes, this tube sounds grainy. There’s a fine texture riding on top of everything — most obvious on massed strings, sibilants, and piano decay. Put a Tung-Sol mouse ear in the same socket and the difference isn’t subtle: the Tung-Sol is far more extended up top and smooth as silk with it, where the PSVANE gets slightly brittle and stops short. It’s not distortion you’d measure and wave around; it’s the sonic equivalent of a photo sharpened one click too far.
And then there’s the MELZ 1578, which isn’t a fair fight at all — it’s roughly four times the money and I knew how this would end before I swapped it in. The MELZ sounds so much fuller and more present, without ever getting fat about it, that the PSVANE afterwards comes across as dry and shallow by comparison. That’s the whole review in one A/B, really.
The other loss is air. Quite a bit of the air old stock gives you just isn’t here. That sense of the room extending past the recording, of the decay drifting off into nothing instead of stopping at a wall — the PSVANE gets you maybe two thirds of the way there and then politely closes the door. You don’t notice it until you swap back, and then you notice it immediately, and then you’re annoyed, because the NOS tube cost four times as much and you were hoping it wouldn’t.
FINAL VERDICT
The standard PSVANE 6SN7 is a legitimately good modern tube and a bad substitute for a great old one. If you need a matched pair tomorrow, if you’re biasing a new build and don’t want to risk irreplaceable glass, or if you simply can’t stomach NOS prices, buy it without guilt — it’s consistent, reliable, and musical enough that you’ll enjoy the system. Just know you’re trading air and refinement for availability and peace of mind.
I’ve been testing a pair of standard PSVANE 6SN7 — not the Horizon, not the Summit, just the regular one that costs about what a decent dinner costs
First, the obvious: they’re built quite well for the price, at least as far as I can judge from the outside. Straight pins, tidy welds, mica that sits where it should, and a bottle that doesn’t look like it was blown during a coffee break. What I can’t tell you is anything about the purity of the metals or the chemistry inside — nobody reviewing tubes on a kitchen bench can. Both tube measured well enough that I didn’t have to return it, which is more than I can say for most 1950s pairs bought off a guy whose eBay handle has four consecutive underscores in it.
Sonically, here’s what I hear:
And now the part that matters. Compared to many old stock tubes, this tube sounds grainy. There’s a fine texture riding on top of everything — most obvious on massed strings, sibilants, and piano decay. Put a Tung-Sol mouse ear in the same socket and the difference isn’t subtle: the Tung-Sol is far more extended up top and smooth as silk with it, where the PSVANE gets slightly brittle and stops short. It’s not distortion you’d measure and wave around; it’s the sonic equivalent of a photo sharpened one click too far.
And then there’s the MELZ 1578, which isn’t a fair fight at all — it’s roughly four times the money and I knew how this would end before I swapped it in. The MELZ sounds so much fuller and more present, without ever getting fat about it, that the PSVANE afterwards comes across as dry and shallow by comparison. That’s the whole review in one A/B, really.
The other loss is air. Quite a bit of the air old stock gives you just isn’t here. That sense of the room extending past the recording, of the decay drifting off into nothing instead of stopping at a wall — the PSVANE gets you maybe two thirds of the way there and then politely closes the door. You don’t notice it until you swap back, and then you notice it immediately, and then you’re annoyed, because the NOS tube cost four times as much and you were hoping it wouldn’t.
FINAL VERDICT
The standard PSVANE 6SN7 is a legitimately good modern tube and a bad substitute for a great old one. If you need a matched pair tomorrow, if you’re biasing a new build and don’t want to risk irreplaceable glass, or if you simply can’t stomach NOS prices, buy it without guilt — it’s consistent, reliable, and musical enough that you’ll enjoy the system. Just know you’re trading air and refinement for availability and peace of mind.