Oilily A88MK KT88 X4 Tube Amplifier, 45W+45W Class AB, Vacuum Tube Integrated Amplifierwith Triode & Ultra-Linear Mode, High-Fidelity Sound for Audiophiles (Black)

Amazing quality and sound. Knobs and switches are super high quality and feel great, especially the volume knob. I use ultra linear mode for fast transient or bass heavy music. I don’t have great ears, but my golden-eared wife says ultra linear mode has better instrument separation while triode mode gels everything together. Tube biasing is super easy to do. I don’t have much need for balanced input though I do have balanced cables so I am using them anyway but I have no clue if it makes any difference. Similar models have a subwoofer output and I almost wish I would have chosen one of them, but I chose the A88 for its looks. It does look amazing in person and is much bigger and heavier than I expected, so do make sure that it will fit in your setup. Another useful feature is the “main in” input which you can use to incorporate this amp into your home theater system. My only two complains are that the VU needles are a little hard to see against the black background, and the knob indicators are also hard to see or feel in low light. Would have been great to have a little notch or something tactile to feel where the knobs are turned to for input selector and volume. Would be great to have a clearer visual cue as well, either a darker marking or better yet an LED that you can see even in the dark.

Tube based class AB amplification, at this price point, beats class A tube amps for usability over a broad range of music styles and recordings. This amp is switchable from triode to linear mode. Triode mode is closer to class A circuitry, the linear mode is linear tube class AB sound. It responds quicker to voltage variations in dynamic music, so the peaks are reproduced with the recorded edges being right there. Think Ramones vs Coltrane. Coltrane's Love Supreme needs a slower and more rounded output, using triode mode. Ramones sound better on linear, edgy, not round. This is better than it costs and customer service is great

Very sweet sounding amp! Great packaging. Have a problem , it blew a fuse after a few hours and I changed the fuse turned it on and one tube blew, glowed white and amp shut off again. Hoping customer service reaches out as they are Bit hard to find !

The sound quality is amazing, the experience is excellent, and it's well worth getting! It has been a few days since I received this A88 gallows, as a lover of music sound quality, I can't wait to experience it, and now I'm here to share my true feelings. Appearance and design After opening the package, I was pleasantly surprised by the exquisite appearance of the A88. The whole body adopts a simple and retro design, especially the slight warm light after lighting up the bilevel tube, which gives people a sense of ceremony. The damping of each knob is just right, the adjustment is smooth, and the material of the body is solid, holding in the hand a sense of full weight, the texture pulls full. Audio Performance After connecting my stereo, I first sampled a familiar jazz album. The moment the music started, I was really blown away. Compared to the purely digital amplifier I used before, the sound of this gallows is much fuller and layered. The treble is translucent, the midrange is very thick, and the vocals, in particular, are warm and real, as if the singer were standing in front of them. Bass dive deep, but not muddy, especially suitable for listening to some music with clear bass line, such as classical and rock. After trying several sources, the performance was consistent. Whether playing through my CD player or streaming directly, the A88 reproduced musical details well, giving me a new feel for many old songs I've heard countless times. Operation and Experience For a gutsy machine, the A88 is surprisingly easy to operate. The wiring is intuitive, and novices don't have to worry about getting it wrong at all. I didn't encounter any difficulties during the commissioning process, and the manual is very clear, with all the functions at a glance. Operation There is a short warm-up process after powering on the gallows, which I think is very humanized, because the characteristic of gallows is that it needs time to reach the best state. During operation, the temperature of the body rises very slowly, the heat dissipation is excellent, and you don't have to worry about overheating at all when using it. Price-performance ratio and summary The A88 really exceeded my expectations for a gallows at this price point. From the sound quality to the appearance to the operation experience, all of them make me feel that the value for money. It not only let me feel the charm of music again, but also provided a perfect solution to upgrade my equipment. For those who like high quality music, this gallows is definitely worth a try. All in all, I am very satisfied with this purchase, both in terms of sound quality and design, which makes me feel that I have gotten my money's worth. Recommended to everyone who loves music!