The B-Tech BT928 / S seemed suitable because it in addition to the volume control has also the possibility of sound enhancement (= left black knob).
The port on the Samsung flat screen was uncomplicated. 3.5mm jack TV-out connected to rear-mounted stereo RCA AUDIO IN terminal of the KVH, the headphones plugged in the front, also on 3.5 mm jack, AC adapter into the power outlet ... that's about it at installation. At the front is also still a slot for a second headphone - regulated not separated! - Which however requires a 6.3mm jack or adapter.
To increase it anticipated, my mother is thrilled, she listens to her testimony at last the missing highs and midtones, not all overlapping dull "Basslastigkeit" and not just "sound mud".
The volume on the KVH is set with her at about 40% of the variable total volume. Room for improvement is therefore enough. Where you will also have to add that this stereo headphone amplifier naturally responded in the volume rendering on the volume control of the TV remote control.
Curiosity sake I have the KHV connected to your Sony stereo on "Audio Out" with a commercially available stereo RCA cable from the amplifier (TV socket) and run the TV sound over it. Here a slight noise was sometimes audible without headphones. But which I think could be also the radiated sound from the respective transmitter.
Schliest to the B-TECH KHV directly to your stereo to - tested via signal from the amplifier headphone output on RCA AUDIO IN when KHV, an improvement of the sound quality is generally observed. But that's just like the TV depending on the KHV-controller setting.
In my personal opinion, one should set the B-tech tone controls at least the middle. In the position on the bottom left, the sound deteriorated and is dull. Those who value a lot of highs, should turn on the B-tech sound knob fully clockwise.
The volume increase in total is kept within limits beyond any distortion or Klirrerei, but is also dependent on the basic setting of Tonsignalgebers and ohm or decibel output of the headphones.
I myself use a Superlux HD681 headphones on the PC, which has a socketed Realtek sound chip. That reminds me of this every now and then something is sound excessively weak in the chest, I'm going to this B-Tech BT928 / s also set stereo headphone amplifier. Immediately after unpacking I connected it to the PC headset jack and was both sound and volume terms quite satisfied with the result.
Delivered this was not the way KHV displayed as "Silver" but in black, but better or to plant my mother's TV watching ...
The only thing I's criticisms is the fact that there is no off switch. Given the price, but an acceptable drawback. Here we recommend a switchable power strip. By the way, nothing cracks when turning at an attached headset.
Otherwise, I think this headphone amplifier for highly recommended. Not least because it brought my mother severely hearing-impaired a better sound experience. They do not even have to remove her two In Ear Hearing Aids, otherwise at every opportunity - on the phone or in embrace for example - start to whistle.
The case is solid and stable built, meticulously crafted and high quality finish. The red Power LED is strong, which can be a bit annoying too, depending on where one draws up the KHV.
For me, the value for money is generally very consistent, so even five stars.
