So I picked up a new phono preamp recently, a Pro-Ject Tube Box S2. It's a nice unit and sounds great, but I've noticed that I'm getting a low-level buzz from its outputs. (It's definitely a buzz, not ...
A conventional 1-MΩ transimpedance amplifier has at least 130 of output-noise density at room temperature (Figure 1). You can consider the 130 nV as the theoretical noise floor limit of the amplifier ...