Graham Slee Solo SRG II Headphone Amplifier

The Bitzie is an excellent device, as long as you ONLY need a USB input. It's the best budget thing that I have ever bought for testing and comparing headphones against each other. For many headphones, adding a Solo, even an Ultra-Linear Diamond Edition, from the analogue connection of the Bitzie will not produce any improvement in sound quality, in my personal opinion. The Bitzie is capable enough on its own for most devices, although some difficult impedance loads (Grados??) or in-ear monitors that are more revealing of low level noise because of how close they are to the ear drum, may benefit from the configuration of the Solo ULDE. Solo uses an analogue input so may well have more connection options than the Bitzie, but it is not a DAC, only an amp.

Edited by Ash - 09 Jun 2020 at 12:19pm

I have not personally used the Powerwire but I have used the Lautus USB cable for several years. The Powerwire is basically the Lautus USB cable but with two separate USB-A connectors, one for 5V power and one for data signal. If you want to save a little money and are happy to potentially use two USB slots on your computer, just buy the Powerwire. Nothing to stop you using the power plug with computer bus power but still have the option of plugging it into an external 5V supply to potentially improve its sound performance and for only an extra £5.