In this week’s episode, listener questions abound, and Darren and Duncan settle in to answer all of them. One listener shares his room size and speaker placement needs, and the guys consider some options about a speaker type for his situation.Another listener with wireless KEF LS50s wants to add tubes to the mix, and it turns out there are a few options out there for doing just that.A listener wonders whether it’s just him or if the windows being near his system tends to collapse the sound stage. A vinyl fan asks about current source phono preamplifiers (as opposed to the standard voltage source ones), also known as transimpedance preamplifiers. Darren goes into detail about the pros and cons for this kind of design, and explains exactly how it works.One question that had been on the guys’ minds lately is volume and listening. What is the correct volume for a given room, system or piece of music?Finishing up the show, the album of the week is revealed. This time, a banjo-led acoustic folk / bluegrass outfit shows up with a record full of catchy melodies.