We audiophiles love to try new things. I stumbled across this device when I read a recent forum review from a Lampizator DAC owner. He swore by it, so I figured I'd give it a try. The best way to describe it is a "powered" rectifier tube replacement. You can use it in any component that has a tube rectifier by plugging in an adapter cable. According to the manufacturer, "you will experience an immediate boost in dynamics, depth/height/width of the sound stage, more natural in tonal quality, and much better instrumental and vocal separations."
The other benefit is you can use a bunch of different tubes. Check out the pic below and you can see my Space-Tech with a spare pair of Linlai 300B tubes compared to the single 6AX5 rectifier tube it replaces in my preamp. The image gives you an indication of the improvement in sound you can expect. I'm convinced that generally, bigger tubes sound better. Every time I've swapped out for bigger tubes, I get a bigger sound. The "Super" version comes with a switchable choke upgrade for a different flavor. Oh, these units are custom built and I received excellent, Canadian-quality customer service. These devices have been around for many years, but I haven't seen them before. More info can be found here:
https://www.thebestamp.com/Accessories/Super_Rectifiers.phpI initially tried it on my Lampizator DAC by replacing an EML 274B rectifier tube and the sound barely improved. Then I put it on the preamp and the power/dynamics shot up to another level. The choke option softens the sound a bit, but I like it better. The sound on some songs is much richer and fuller, and the bass thumps hard -- real hard. It's what bass should sound like. The Space-Tech Lab rectifier makes a huge difference on some songs. The sound is "meatier" -- it's like the difference between the singer performing in your living room vs. on a small stage, but there's no loss of detail, soundstage, or anything else. There's no downside sonically. Perhaps a simpler way to describe the sonic improvement is that music sounds more authoritative, and it's a substantial improvement on some songs.
I didn't know the long-term technical implications of using this device, so I checked with the designer of my preamp and he's OK with me using it. Likewise, the guy who reviewed it with his Lampizator DAC checked with the designer beforehand and he also received a thumbs-up.
For about the cost of upgrading to a nice pair of interconnects, this rectifier is definitely worth keeping. It looks cool, too. You'll pay more for a high-end pair of tubes than you will for this unit, so if you already have a stash of tubes, it's a no-brainer. Highly recommended.
