NOS GEC Osram Marconi A1834 – 6AS7G Gold Grid Black Plate Power Tube. The minimum value is 35 / 35. The average new tube tests at 56/56. Test results are 68/68. There is no gas, no shorts, and life test was good. This is from a collection which I have been holding onto for decades. Read More

My listing may not be as fancier as others. My images may suck. The tube may not be the prettiest but when it comes to performance this baby will test as a true Audiophile likes. I have a calibrated tv7/U. Paul Hart performed the calibration. NOS GEC Osram Marconi A1834 – 6AS7G Gold Grid Black Read More