Oulalaaaaa I had been warned not to invest in Hz that was not good ... and what a surprise despite warnings have opted for j hz h4 (despite my limited budget hyper indeed J'L 'I gained nine to 59 euros), and franhcement I am very pleasantly surprised ... great sound as clear as in the saturated fat .. its insured, the metalheads will have their happiness ... c the passive version of EMG 81 .. . same power same timbre (a close sth ... but I chipotte for nothing !)... do not forget that the characteristic of a microphone is active by its silence and not power! So I do not understand pq is judged so poorly that hz h4 while it is excellent!