BoyuuRange MT-34 MKII EL34 Tube Hi-Fi Intergrated Amplifier Push-Pull

The Good-First, the sheer weight of this thing is impressive. There seems to be no cost cutting on the materials used, because it is heavy duty. Second, it is actually quite handsome, even to the point where my wife thought it looked nice (which never happens on audio gear). A cage is included and it looks great, as well.Assembly was simply a matter of placing the tubes. All tubes were labeled by hand so it was easy to know where everything went. I hooked my Bowers & Wilkins 606 bookshelfs up started the tube run-in process. I had probably 10 hours on them, before really auditioning them, and the tubes really do need time to fully bloom their sound. The sound is incredible for this price point. The EL34's are about as legit as a tube as it comes, as this is what so many guitarists use in their maps- and I love that. had I kept this amp, I am sure the sound would have gotten even better over the next 20 hours-50 hours. Triode mode sounds really nice, but it does cut doen the power output, so it is a little better for lower volume levels.The not so good-You need efficient speakers for this amp. My Bowers sounded good, but as I turned up the volume I could hear where it just didn't have enough juice for my less efficient speakers. If your speakers have a 90+ sensitivity, this would be fantastic.Next, microphonics in the tubes is a bit of an issue as it adds some noise to the sound, most noticeable in the upper midrange on upbeat rock songs. HOWEVER, I did have my speakers on the chest of drawers with this amp. So, I am sure some some vibration isolator pads on the speakers, and perhaps this amp, would have gone a long way to fix it. If that doesn't eliminate it, then you may want to roll some other tubes in that might fit tighter and/or have thicker glass.Conclusion-I was impressed enough to purchase the next step up from this (https://www.amazon.com/gp/product/B07L6DDYPP/, on order), because I believe it will power my speakers sufficiently. I already bought some cheap isolation feet for my speakers to combat the microphonic noise https://www.amazon.com/gp/product/B075KK8WXM/. IF I still have noise, I will buy some Gold Lion Pre-amp tubes, and I think that will eliminate it entirely (plus Gold Lions are just fantastic).

1-year update: everything is still working completely without problems. Still impressed with the sound quality and value. Don’t hesitate if you’re on the fence! Unless you have inefficient speakers, say under 90 db, that require lots of power, this will do the job.Original review: Very pleased with this amp! There was a noticeable improvement in detail, sound stage and tonality over my solid state amp. I am pleasantly surprised at how satisfying the overall performance is on a wide range of music. Some cuts that were previously edgy and harsh were smooth as glass with the MT-34 along with improvement in clarity. I’m thinking of the louder section Adele’s “Hello”.The unit was double boxed with the tubes lettered to match their individual sockets and well protected in cartons packed into the tube cage. Nice job.Everything was clean, fingerprint free and showed a high build quality. Switches all have a nice functional feel, but not luxurious. You won’t mistake it for a Luxman but it is gorgeous to look at in its own right. The Amazon pictures don’t quite do it justice.I don’t have any downsides to mention. At the moment there is a faint 120hz ground loop to sort out, even though it’s not detectable during playback. I don’t know the cause, so I’ll withhold blaming it on the MT-34. Edit: Update! The hum I experienced was from a nearby PC. Moved the PC, the noise disappeared.It also puts out more heat than I expected. I suppose all tube amps do.I have no reservations recommending the MT-34 if you have moderately efficient speakers. I’m using them with very efficient Crites Cornscalas similar to Klipsch Cornwalls and the amp is more than powerful enough to listen at live performance levels on most recordings including orchestral, rock, jazz, country. It’s also a great match sonically with horn midrange and highs like the Klipsch while delivering full, tight bass in the bargain.If you’re on the fence deciding, I’d say go for it! Excellent product.

I have had this amp for a couple years now. I must say that the amp was a pleasure to listen to when I first got it. About 8 months ago the amp started to pop and crackle when I turned in on and it did the same when turning the amp off. This lasts about 5-7 seconds and then it stops. Now I hear intermittent crackles while listening to a record. Occasionally, I often get a high pitch whine and slight echo coming from the amp while it is playing. It does both even when the volume is all the way down. I am not sure if this is a problem with the amp or a tube issue. I hate to spend $200 for four EL 34 tubes and find out it is another issue. What are your thoughts?Update: The company sent a replacement EL 34 tube, and all problems disappeared.Great customer service. I did add tube rings to eliminate echo. Amp works great now except for a loose power switch. A good value for the money.

I was on the fence with this one. Could it power my speakers, none of which are more than 87db efficient. I am pleased to say it does just that. In 15 watt Triode mode I have no problem driving my Wharfdale Diamond 225. I also have no problem driving Elac debut 2.0 6.2 I have.As far as sound goes, WOW! This amp has such a holographic sound stage its hard to believe. The bass is tight and controlled the mids are perfect and the highs are crystal clear. That is both speakers being tested.What I did not like was ultra linear mode. Though providing an extra 10 watts it was lacking in soundstage.I'm very pleased to have bought this amp.