| ARC REF 150 Buzzing noise | scottwsmith | 692 | 12 |
| What speakers work well against a wall | jayctoy | 1088 | 32 |
| Phono Preamplifier recommendations for matching with Dynavector Karat 17D2 | js8896 | 1157 | 9 |
| Audio Research PH5 Phono Preamplifier Input Clipping Problem | scottwsmith | 2889 | 39 |
| ARC Reference 150 Tube Biasing Issue | bdp24 | 3306 | 11 |