I can't really think what I'd do with a tiny portable audio analyser "capable of making dual-FFT measurements, time delay spectrometry sweeps and even recording high resolution impulse responses", even if it came with with phantom power mic inputs, recording to SD card, and a built in USB interface ("Features a fully isochronous Burr-Brown USB codec"). But the Terrasonde Audio Toolbox 3C is a beauty, wrapped up in bendy aluminium with a big handle on one end and a huge colour display. If I had $2,400, it would contrast nicely with this old thing.