1957 Amperex Heerlen mC4 Foil D Getter ECC83 12AX7 Tube Perfectly Balanced Gm/Em
USD 129.00 USD
Specifications
| Brand | Amperex |
| Type | Preamp Vacuum Tube |
| Country Of Origin | Holland |
1957 Amperex Heerlen Holland mC4 long plate Foil-D getter 12AX7. Tested on the TV7-D/U for mutual conductance and on the B&K Dyna Jet 606 for emissions. This tube is perfectly balance on both. TV7 results where 32 = 65%, this tube tested 38/38 B&K 606 results = 93/93
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