We have over 30 years' experience with using and listening to high end audio amplifiers and over 25 years in improving the valves.

There is general consensus in the audio world which of the pins are assigned to a signal as used by HIFIMAN for instance. It warns that not having this output filter could damage the speaker voice coil and also the EMI could have negative impacts on nearby devices. Just check out Audio Space, Cayin, Prima Luna, Consonance, Mingda, Doge and Line Magnetic are all excellent. A circuit diagram is very difficult to draw, because the circuit is on both sides of the board and the details are too small.By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. It's a Douk audio rebrand from Weiliang Audio E600 which from my experience cannot do proper SE>BAL or BAL>SE, as well as having an out of phase XLR-4 output.

I'm still laughing at the claim that some listeners reckon they can hear a difference between different valves. On topic, I've also heard some excellent sounding Chinese gear like Ming-Da and Line Magnetic (have an LM dac myself) and have built gear using affordable (not cheap) Chinese line transformers, plate chokes etc. I have also enclosed a picture of the output waveform with a 4 Ohm load connected to one of the outputs when driving the amplifier with a sine signal.The inlaws makes a request to families in HK and then it gets taken across the boarder, just don’t get caught with quantities otherwise customs will either confiscate or make you pay import duty. They look to be packed with features and a cursory glance at youtube shows a guy who loves the entire line and thinks that they’re plenty powerful. In other words you are likely to damage the speaker voice coil by driving a speaker with such a signal. The second picture shows the measured output signal with no speaker load attached while streaming silence. Sadly unable to use currently and test performance, the item requires an external power source of a voltage I don't have, have to try source suitable power source,, disappointed item wasn't supplied with this important piece of the package to work, item seems robust and solid enough, good quality appearance and build, but until power adaptor sourced unable to judge performance,sad the adaptor not included.

They could have very easily been honest and up front with this product, and they would have been successful. Probably because the one amp is the basis for many many amplifier types that all look different when under the bonnet it's just the same SS amp. Me and others were not so lucky, I can only conclude there is very little quality checking on these. When manufacturers measure amplifier dirtortion they usually measure distortion by adding a low-pass filter after the Class-D amplifier.The fact is that most speakers will exhibit fairly high eddy losses at those switching frequencies used by Class-D amplifiers. Where does the signal on the cathode 6n1p and on the cathode and anode 6p15p comes from, if the signal comes on the 6n1p grid only when tubes are removed? After being lived in Shanghai for a year, my experiences just put me off that anything is made in china, especially Chinese brand. StereoNET (Australia) is part of an international network of publications owned wholly by Sound Media Group (Australia). If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag.

The audio is detailed and transparent and quite revealing that my Mordaunt Short MS15 speakers, although lacking a bit of bas. I would not recommend this product if you want to keep your speakers safe and avoid having massive EMI issues. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Given the fact that the connectors aren't hand wired and are soldered onto the PCB correctly this leaves a few conclusions.First of all, every speaker handles high-frequency signals differently since a speaker is designed to be driven with signals at frequencies below 25 kHz. Class-D amplifiers work by switching the output between ground and the supply voltage at a high frequency. The cheapest amplifier with just analogue inputs that I would be willing to risk my money with is probably the 2x100 watt Sony STR130.