Good quality.... Need a very good dc power supply and pre-amp....

Good quality.... Need a very good dc power supply and pre-amp....

Good quality.... Need a very good dc power supply and pre-amp....

Brilliant little powerful amplifier. Just be careful with The PSU The chip is designed to allow the power supply to be earthed in a different place to the phone inputs but the designers of the board have missed this point and connected the phono outer to the main Psu ground. This means that the voltage drop on the PSU negative feeds back to the input and can give noise or even instability and feedback howl. The easiest way round this is to ensure the 36volt PSU is not grounded at all. If you want to guarantee you wont get smoke if there is a fault you should ground the phono plug back to the ground terminal on the other side of the board with a 2.5mm cross section wire and earth the equipment at this wire as well. apart from this very easy to use and good quality sound Ted Slevin

Brilliant little powerful amplifier. Just be careful with The PSU The chip is designed to allow the power supply to be earthed in a different place to the phone inputs but the designers of the board have missed this point and connected the phono outer to the main Psu ground. This means that the voltage drop on the PSU negative feeds back to the input and can give noise or even instability and feedback howl. The easiest way round this is to ensure the 36volt PSU is not grounded at all. If you want to guarantee you wont get smoke if there is a fault you should ground the phono plug back to the ground terminal on the other side of the board with a 2.5mm cross section wire and earth the equipment at this wire as well. apart from this very easy to use and good quality sound Ted Slevin

Brilliant little powerful amplifier. Just be careful with The PSU The chip is designed to allow the power supply to be earthed in a different place to the phone inputs but the designers of the board have missed this point and connected the phono outer to the main Psu ground. This means that the voltage drop on the PSU negative feeds back to the input and can give noise or even instability and feedback howl. The easiest way round this is to ensure the 36volt PSU is not grounded at all. If you want to guarantee you wont get smoke if there is a fault you should ground the phono plug back to the ground terminal on the other side of the board with a 2.5mm cross section wire and earth the equipment at this wire as well. apart from this very easy to use and good quality sound Ted Slevin