Items by John Massaria
Quicksilver Audio Headphone Transformer Coupled Single Ended class A triode
Kennerton Gjallarhorn GH-40 Caliber 40mm – horn-loaded headphones
Closed Back 50mm Aluminum/Magnesium M Shape Dome Dynamic Driver
AmerTransparent Truthful Affordable RCA Ohno Continuous Casting
Strauss & Wagner EM205 Earphones 3.5mm Connection And Mic+Remote
Kennerton Rognir Closed Back Reference Headphones
xDuoo MT-602 Tube Class-A Headphone Amplifier
Best $olution for iphone users - Sound Isolating Earbuds With MFi Certified Cable+HQ Microphone
GL1200 UPDATED 5/18/21 Full Frequency True Ribbon Driver Headphone Gold & Silver Ribbons Tested
FULL REVIEW 3/2/21: Spirit Torino Radiante Ragnarr Professional Closed Back Dynamic Driver
UPDATED 1/27/21 FULL REVIEW Kinera - Nanna 2.0 Hybrid Electrostatic IEM
FULL REVIEW: Dual monaural USB DAC/headphone amplifier supporting DSD512 and PCM32/768
Kennerton Gjallarhorn GH50 JM Edition
REVIEW: Tripplite IS1000HG Medical-Grade Isolation Transformer with 4 Hospital-Grade Outlets