works excellent new caps ,diodes,bias,work done on everything but preamp relay relay doesnt always work but can be repaired if needed tube in excellent condition my tech. put a resistive network on the input because of todays higher output radios so it will not over drive the amp with out it using a 2950 i was getting 750w but with it i am seeing 500 which will let the amplifier live for ever you can remve it if you are using a older lower power radio i will ship this if needed also i will get pics up soon the only reason i am selling is to purchase a hf radio if anyone doesnt know this amp runs one 4cx250b tube asking 700