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40 PCS LOT Vintage 4 transistor amp electronic project - crystal radio amplifier
USD 300.00 USD
40 piece lot, vintage, NOS (New Old Stock) four transistor amplifier board. Fourty pieces fit in a medium Flat Rate Priority Mail box, so that is how we arrived at a 40 piece lot. See our other listings for a single piece. This was meant to be part of a record player system. It is a HIGH GAIN 4 transistor mono amplifier, with provisions for ceramic or crystal phonograph cartridges. This is an excellent item, to use with our earphone output radio kits, to provide loudspeaker volume! Circuit includes a rectifier diode and filter capacitor, and can be AC or DC powered. The left control is a tone control, and the right is a volume control, with on-off switch. The green wires are the speaker output connections. The black and white wires, connect to the switch on the back of the potentiometer. The connections for signal input and power, are through holes on the board, labeled on bottom. Requires a 6-11 VAC, or 9-15 VDC power source. (See our other listings for a suitable AC adapter we may have listed). Use with 8-ohm or higher impedance speakers. These are unused and untested. Buyer pays return postage. Comes with 2 page data sheet. Handy little amplifier! Buyers pay Priority Mail Medium Flat Rate box shipping cost. The seller makes no representation of any item(s) sold to be fit for a particular purpose and assumes no liability for its use or misuse. It is assumed that the unit(s) will be installed and operated by qualified personnel. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the item(s).
Specifications
| Return Shipping Will Be Paid By | Buyer |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 30 Days |
| Refund Will Be Given As | Money Back |
| Model | n/a |
| Country/Region Of Manufacture | Korea, Republic of |
| Type | 4 transistor amplifier |
| MPN | Does Not Apply |
| Brand | Unbranded |
40 piece lot, vintage, NOS (New Old Stock) four transistor amplifier board. Fourty pieces fit in a medium Flat Rate Priority Mail box, so that is how we arrived at a 40 piece lot. See our other listings for a single piece. This was meant to be part of a record player system. It is a HIGH GAIN 4 transistor mono amplifier, with provisions for ceramic or crystal phonograph cartridges. This is an excellent item, to use with our earphone output radio kits, to provide loudspeaker volume! Circuit includes a rectifier diode and filter capacitor, and can be AC or DC powered. The left control is a tone control, and the right is a volume control, with on-off switch. The green wires are the speaker output connections. The black and white wires, connect to the switch on the back of the potentiometer. The connections for signal input and power, are through holes on the board, labeled on bottom. Requires a 6-11 VAC, or 9-15 VDC power source. (See our other listings for a suitable AC adapter we may have listed). Use with 8-ohm or higher impedance speakers. These are unused and untested. Buyer pays return postage. Comes with 2 page data sheet. Handy little amplifier! Buyers pay Priority Mail Medium Flat Rate box shipping cost. The seller makes no representation of any item(s) sold to be fit for a particular purpose and assumes no liability for its use or misuse. It is assumed that the unit(s) will be installed and operated by qualified personnel. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the item(s).
