This was fitted to a bass I bought on here, which unbeknown to me, suffered from very occasional loss of volume and crackling. Not willing to risk issues at impending gigs, I bought a replacement from Mr East, as I was really impressed with the tonal quality. I subsequently had the unit checked by my local amp tech who cold find nothing wrong apart from perhaps a loose connection which he corrected. So now I have this surplus to requirements pre-amp which should be in perfect working order! I wo