(!!!!) (Best Single) GZ34 Mullard UK branded Mazda NOS 1975 (58/40 and 59/40)

GZ34 Mullard UK branded MAZDA NOS 1975 (f32 series) 58/40 59/40    Tested on TV-7D/U   recommended for: - Bob Latino M-125- Cary- Dynaco ST-70- Scott LK-48- Matchless SC30- Matchless Lightning 15- Melody H2A Integraded Amp- Modwright PS and 9.0 preamp- Modwright LS100- Supratek (all models)- Marshall- Fender- Dr. Z Z-28 (6V6 amp)- VOX AC15, AC30- Prima Luna PL3 preamp- Victoria Double Deluxe (Tweed)- Victoria Regal 2- Donald North headphone amp- Cary 302 MK2 phono- AES AE-3 MKII preamp