Vintage Tube Amp

This is used Harman Kardon A300 Stereo integrated tube amplifier. It includes the metal cabinet, the owner’s manual and a mounting template (to install the amplifier in a wood cabinet). It is in very good physical condition with no rust or corrosion. The owner’s manual lists a person who lived in Colorado, so it seems that the amplifier has been in Colorado its entire life. The front metal panel is not perfect, there are areas where the gold finish has rubbed off (volume control area) and a silver color now shows; see the front panel photos. It works well and all the tubes test good on a Sencore TC154 emissions type tube tester. The technical specifications (on the first page of the owner’s manual) indicate that this amplifier produces 15 watts per channel of music power output (12 watts per channel continuous power output). The owner’s manual also contains a schematic diagram and a parts list. The control pots and switches were sprayed with contact cleaner. It was hooked up to a CD player and small bookshelf speakers for initial testing: It sounded really nice with all the tone controls working properly. It was also connected to Infinity RSb speakers, fed from a CD player (playing a Pat Metheny CD) and it really came alive with bass punch and high frequency reproduction! Thanks for checking this out.. The item “Vintage HARMAN KARDON A300 Award Series Stereo Tube Amp/Amplifier Works Well” is in sale since Sunday, January 26, 2020. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “colorado_architect” and is located in Littleton, Colorado. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Grenada, Barbados, Bangladesh, Bermuda, Bolivia, Egypt, Guadeloupe, Iceland, Jordan, Sri lanka, Luxembourg, Macao, Martinique, Maldives, Pakistan, Reunion, Uruguay.

• Model: A 300
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Type: Stereo Tube Amplifier
• MPN: Does Not Apply
• Brand: Harman Kardon
• Featured Refinements: Vintage Stereo Tube Amplifier

This is a Harman Kardon A300 Integrated Stereo Tube Amplifier. It uses 7408 Output tubes – a variant of a 6V6. All the tubes were tested on a Sencore TC154 emissions type, tube tester and passed. The testing included grid leakage and shorts. It works well now; I listened to an entire CD earlier today with no problems (distortion or red plating). It includes the owners manual (with the prior owners name on it) and a template for mounting this in a cabinet. It includes the top metal cover which is in very good shape (It looks more gray than green like the pictures show). The finish on the front face is “champagne gold”, but it is worn in some areas (like around the volume control knob and some other areas) and appears to be more silver than the champagne color. Zoom into the front face pictures. The output tubes all have a yellow “Harman Kardon” logo and appear to be original to the amplifier. The smaller tubes (4-12AX7′s and 1-12AU7) are not original to the amplifier (but have been tested and work as the should). The item “Vintage HARMAN KARDON A300 Tube Integrated Stereo Amplifier Sounds Great” is in sale since Sunday, October 13, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “colorado_architect” and is located in Littleton, Colorado. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Grenada, Barbados, Bangladesh, Bermuda, Bolivia, Egypt, Guadeloupe, Iceland, Jordan, Sri lanka, Luxembourg, Macao, Martinique, Maldives, Pakistan, Reunion, Uruguay.

• Model: A300
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Type: Integrated Stereo tube Amplifier
• MPN: Does Not Apply
• Brand: Harman Kardon

This is a Harman Kardon A300 Integrated Stereo Tube Amplifier. It uses 7408 Output tubes – a variant of a 6V6. All the tubes were tested on a Sencore TC154 emissions type, tube tester and passed. The testing included grid leakage and shorts. It works well now; I listened to an entire CD earlier today with no problems (distortion or red plating). It includes the owners manual (with the prior owners name on it) and a template for mounting this in a cabinet. It includes the top metal cover which is in very good shape (It looks more gray than green like the pictures show). The finish on the front face is “champagne gold”, but it is worn in some areas (like around the volume control knob and some other areas) and appears to be more silver than the champagne color. Zoom into the front face pictures. The output tubes all have a yellow “Harman Kardon” logo and appear to be original to the amplifier. The smaller tubes (4-12AX7′s and 1-12AU7) are not original to the amplifier (but have been tested and work as the should). The item “Vintage Harman Kardon A300 Tube Integrated Stereo Amplifier Sounds Great” is in sale since Saturday, September 14, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “colorado_architect” and is located in Littleton, Colorado. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Grenada, Barbados, Bangladesh, Bermuda, Bolivia, Egypt, Guadeloupe, Iceland, Jordan, Sri lanka, Luxembourg, Macao, Martinique, Maldives, Pakistan, Reunion, Uruguay.

• Model: A300
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Type: Integrated Stereo tube Amplifier
• MPN: Does Not Apply
• Brand: Harman Kardon

Vintage Harmon Kardon Award Series A30k (A300) Integrated Tube Amplifier. Up for sale is a vintage Harmon Kardon Award Series A30k (A300) Integrated Tube Amplifier. I acquired this item from a great friend and it has been sitting idle for 20+ years. This tube amplifier is a shining example of the beautiful sound Harmon Kardon is known for. Don’t miss out on your chance to grab this wonderful piece of vintage hi-fi history. The new Harman Kardon Award series represents the culmination of extensive research and experimentation in high fidelity component design. These magnificent instruments will satisfy the aspirations of those who insist on nothing short of perfection itself. They also anticipate any of the new developments in high fidelity by including features never before found in high quality components. The keynote in the Award series is unparalleled performance and no compromise has been made in the design of these superb units. 7408 (Original Harmon Kardon). 12AX7 (1 is an Original Harmon Kardon, 3 are Telefunken). 12AU7 (Original Harmon Kardon). Power Output: 12 Watts Per Channel into 8 (Stereo). Frequency Response: 15Hz to 70kHz. Total Harmonic Distortion: 1%. Input Sensitivity: 3mV (MM), 125mV (line). Signal to Noise Ratio: 60dB (MM), 75dB (line). Speaker Load Impedance: 8 to 16. This unit was brought up slowly using a Variac, has been cleaned and all functions were tested and found to be working. Listing and template services provided by inkFrog Open. The item “Vintage Harmon Kardon Award Series A30k (A300) Integrated Tube Amplifier” is in sale since Friday, December 08, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “cowbell_slc” and is located in Salt Lake City, Utah. This item can be shipped worldwide.

• Brand: Harmon Kardon
• Type: Integrated Amplifier
• Model: A30K