Grado Labs RA1headphone ampfeedsGrado Labs RS1xheadphones
Used together in 2 real systems
Works, with caveats
Grado Labs RA1 + Grado Labs RS1x works, with a couple of tradeoffs worth knowing before you commit.
What the compatibility check found
Headphone Impedance Matching
Caveat⚠ Poor impedance match (damping factor: 1.2)
Use a headphone amplifier with lower output impedance (typically <1Ω for low-impedance headphones, <10Ω for high-impedance headphones)
Physical Connectivity
Couldn't verifyConnector matching does not apply to this pairing