Welcome to the Amplifier Surgery ShopMost Audio research SP series and Conrad Johnson PV series preamplifiers will now have worn out, sagging or cracked plastic FEET. These typically make the units sag on one side and also mark and scratch their resting surfaces. Here is a simple and inexpensive solution to give your unit a much-needed lift with our New (MADE IN USA) BLACK color FEET. You simply unscrew the old feet and screw in these new feet using the same machine sc...rews. Installation really is as simple as that and you will immediately see that your unit will sit in a more balanced posture. These feet are made in the USA from heat resistant rubber-plastic also have a steel reinforcement inner neck that ensures that the Feet will never sag and stay upright for a lifetime. Picture shows a new foot with the old plastic feet for comparison. Note that the new feet are a little taller, providing a much better surface contact area and better ventilation too. These new feet will never decompose or crack. Note that they are Made in the USA. If you need your Preamplifiers Repaired and Restored, please contact us for details (we perform high quality ARC and CJ repairs and restorations too). We can install new feet as part of our restoration service. If you have any questions, please don't hesitate to ask.These feet will fit well on: Audio Research SP-2, SP-3, SP-4, SP-5, SP-6, SP-7, SP-8, SP-9, SP-10, SP-11, LS15, LS25, CD1Conrad Johnson PV-1, PV-2, PV-3, PV-4, PV-5, PV-6, PV-7, PV-8, PV-9, PV-10, PV-10B, PV-11, PV-12, PV-14, PV-15