Vintage Tube Amp

Offered here is a vintage Acrosound Ultra-Linear output transformer, Type TO-310, manufactured in the USA by Acro Electronic Products Co. Acrosound transformers are highly regarded for wide bandwidth, excellent balance, and use in classic push-pull tube amplifier designs. The TO-310 is a desirable model for restoration projects and high-quality DIY builds. Metal cover shows cosmetic wear, scuffs, and paint loss consistent with age (see photos). Original cloth-covered leads with typical age-related wear. Leads retain factory number tags, which aid identification. Mounting base is solid and straight. Electrical Checks (DC Resistance). The transformer has been checked for continuity and DCR only using a digital multimeter. Blue stripe? Green stripe: 98.8? Blue? Green: 118.9? Tan #1? Green stripe: 38.8? Tan #2? Blue: 152.9? Tap 1? 2: 0.7? Tap 1? 3: 0.4? Tap 1? 4: 0.4? Readings are consistent with a multi-tap ultra-linear output transformer and indicate intact windings. Continuity and resistance checks only. No signal, load, or in-circuit testing performed. Transformer has not been powered. Genuine vintage Acrosound iron (not a reproduction). Excellent candidate for restoration, tube amplifier builds, or collectors. Please review all photos carefully – they are part of the description. If you have any questions or would like clarification on the measurements, feel free to ask.

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up!

This is not available for international buyers. I will almost certainly send it in two separate packages since one piece is extremely heavy. You get all three pieces as seen in the first photograph and then I give you a lot of detailed photographs of each piece. There is a complex cord that looks like the pin output of a vacuum tube that goes between two of the pieces. Very rare amplifier setup with separate control module and preamp output stage. The backbone of this system is the valuable TO-300 transformer which is labeled as an 18 Watt output variety. There’s a complex interconnect cord as well as a four prong cable that connects the two units together. I don’t dare test this or plug it in because I know a lot of people like to test these on a variac. I give you a lot of photos there is some discoloration and wear on the metal chassis of both units but the toggle switch moves freely into its three positions and the tube plugs don’t look cracked or damaged. Half of the knobs on the control unit turned freely and some have meaningful resistance. You can see some framing of the four prong cable but you’ve got multiple RCA outputs and a power lamp indicator the primary tubes on the larger unit are ge 61-43 / 188-5.

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. This item can be shipped to United States, New Zealand, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Liechtenstein, Kuwait, Benin, Algeria, Antigua and Barbuda, Swaziland, Italy, Tanzania, Pakistan, Burkina Faso, Panama, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Tajikistan, Vietnam, Malta, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Uganda, Luxembourg, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. This item can be shipped to United States, New Zealand, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Liechtenstein, Kuwait, Benin, Algeria, Antigua and Barbuda, Swaziland, Italy, Tanzania, Pakistan, Burkina Faso, Panama, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Tajikistan, Vietnam, Malta, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Uganda, Luxembourg, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. This item can be shipped to United States, New Zealand, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Liechtenstein, Kuwait, Benin, Algeria, Antigua and Barbuda, Swaziland, Italy, Tanzania, Pakistan, Burkina Faso, Panama, Singapore, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Tajikistan, Vietnam, Malta, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Uganda, Luxembourg, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. This item can be shipped to United States, New Zealand, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Liechtenstein, Kuwait, Benin, Algeria, Antigua and Barbuda, Swaziland, Italy, Tanzania, Pakistan, Burkina Faso, Panama, Singapore, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Tajikistan, Vietnam, Malta, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Uganda, Luxembourg, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. 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, Sweden, South Korea, Indonesia, Taiwan, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Republic of Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

A Very Nice Used Vintage Tube Amplifier Parts With Acrosound Ultra-Linear Transformer Type TO-300. I do not have the separate power supply and did not tested the unit. 2 Tubes are 5692. In great condition for the age. Very clean inside out. I do not know much more about this amp Altec. I got this item in an estate sale. The last owner was a serious collector & an. I bought a large amount of tube amp, preamp, reel to reel etc. I sanitize everything I sell. Please look at the pictures carefully to get an accurate description. And feel free to ask questions. Please contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings. As I will always do my best to solve any problems that may come up! This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Transformers”. The seller is “sabicollectibles” and is located in this country: US. 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, Sweden, South Korea, Indonesia, Taiwan, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Republic of Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion.

• Model: Type TO-300
• Country/Region of Manufacture: United States
• Brand: Acrosound

This amplifier is in original untested condition. Everything else looks to be original, including the Eico branded Mullard power tubes. UNIT Missing 1 Tube. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “ross1charter” and is located in this country: US. This item can be shipped to United States, Mexico, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, Korea, South, Indonesia, Taiwan, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Malaysia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.