Following Guy´s very kind suggestion I have just upped the value of the output caps in my souped up P10 phono stage from 1.0uF to 2.2uFto match current production models. The result is plain to hear : bass levels have increased and are much easier to follow so I´m chuffed. I took out the ex-Bat amp 1.0uF copper coloured caps I was using and fitted some used LCR Au Ca Pa 630v caps because I already had them. Any suggestions on which caps to buy to improve on these. I have some unused 4.7uF Auricaps but do not know if fitting these would be OTT because I don´t think I need any more bass, just better defined I guess although the LCRs haven´t burned in yet - apparently they do take a while ( Humble Homemade hi-fi Caps test dixit). My phono stage feeds a Sugden A21SE and World Designs WD25TEx closed box speakers.