Stuttgart German made Lorenz tubes are rather obscure like Valvo Hamburg made tubes. Most Lorenz label tube types in the market are from E. European makers (Tesla, RFT, Ei, Tungsram etc.) or W. European makers (Siemens, Telefunken and Philips Etc.).
PCC88/7DJ8 is pin compatible with 6DJ8/ECC88 except that it has 7V heater. Consult your amp/gear maker before trying these or post a question on Tubes Asylum. MINT NOS PCC88 7DJ8 Lorenz Stuttgart tubes with Gray Shield OEM NO LABEL. Made in Germany. Tubes have typical Lorenz etched brown codes on the glass. From the red dot on the bottom and from the tight scores, it seems that this batch was either tested/selected at the factory or by some stockist. Stray flashing on the lower half and bottom of the glass is normal. In generic white boxes from bulk.
In our opinion, these tubes are in the same league if not better than the Telefunkens sonically. However, we cannot guarantee same results in your system to your ears.
Tested and closely matched on Top of the Line Calibrated
Hickok 580 Lab Grade Tester. 65% = 7500 mmhos for 7DJ8/ECC88 on this tester.
All tubes test above 11000 mmhos.
Price = $50 Per Tube.
Select 2 for a Matched Pair or 4 for a Matched Quad. Odd number of tubes will be matched also.
