Ten-Tec Hercules II Model 420 Linear Amplifier in Excellent physical condition. Original Owner, Well Stored in Smoke Free Environment, Very Low Hour Usage - Probably Less Than 20 Hours Since Purchase! Compact, Lightweight, Remotable, Solid-State, No Tune Amplifier. Typically 500 Watts Output P.E.P with 30 to 50 Watts Drive, Depending on Band. Has silent cooling fan. Runs 15-160M, SSB/CW/RTTY: 550W DC Full QSK Keying; 12-14 Vdc Operation. Uninstalled accompanying 10M kit also available, which is included in the purchase price. Unit worked properly the last time that I had it in operation and as such should be fine at its new QTH. Price: $625. I have two of these available. System includes: Original Receipt, Original Box, and Original Manual. Also available is a matching TransWorld Electronics PS-75 Power Supply that can be paired with the unit for $275. Sold AS IS. No PayPal. Cash or Cashier's Check. Shipping available at Buyers Expense. Call 817-756-6986 ask for Keyonia, YL, or Atlee, NT5W.