• LM3886 120W+120W Parallel Dual Channel Fever Amplifier Board 2.0 Amp Bare PCB

    LM3886 120W+120W parallel dual channel power amplifier PCB empty board.
    C $7.90
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    26 sold
  • Universal prototype PCB Board for 9pin 7pin Tube Amplifier Preamp Valve Amp

    Small 7-pin / 9-pin sockets tube amplifiers universal prototyping PCB: Exquisite FR4 double-sided gold-plated glass plate, high-quality PCB board, thickness 2mm is not easy deformation, PCB size 120 × 100mm. Prototyping PCB hole diameter 0.9mm, pitch 2.5mm, component foot distance, tube foot distance, foot hole size design is reasonable, suitable for a variety types of resistors and capacitors. Three tube sockets design, can be installed Six small 7-pin, or six small 9-pin sockets, flexible with the use. The socket pins are marked on the front and back sides of the board for easy identification. Components can be double-sided assembly welding, up and down the line arbitrary. It can also be sold around eight 3-bit standard terminals, as power supply, input and output terminals.
    C $9.19
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    60 sold
  • Bare PCB for TDA7293 TDA7294 Power Amplifier Board w/ UPC1237 Protection Circuit

    Tips: it only a bare PCB, not contain other parts. PCB board size: length 140mmX width 80mm thickness 1.6MM main feature: Wide Supply Voltage Range: Dual AC 22-28V High Output Power: 85W X2 (TDA7293) / 70W X2 (TDA7294) Noiseless ON/OFF switch Low noise and distortion Short circuit protection and overheat protection.
    C $6.59
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    47 sold
  • Dual Power Amplifier Board PCB Toshiba 2SC5200 2SA1943 400W Mono High Power AMP

    Mono 400W power amplifier board 1943+5200 power Toshiba tube power amplifier board Tip: This product is just a PCB blank and does not contain any components. The board is mono, does not have rectifier circuit after power amplifier board, need two-channel, please buy 2pcs. The circuit design uses the A970/C2240 high-withstand-voltage audio pair dual differential circuit, and the A1145/C2705 as the voltage amplification to drive the mid-power pair A1837/C4793, and the output stage uses the A1943/C5200 high-power Toshiba pair for a wide range of power supply. DC positive and negative 20V-50V can be, as long as enough power to easily reach 400W. The sound quality is good and the driving force is very strong. Pushing the 15-inch speaker is no pressure. Empty board size: 195X60X1.6MM lon.
    C $10.15
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    53 sold
    Color: Blue
  • LME49600 HiFi Audio Buffer Amplifier Bare PCB for Preamp/headphone NE5532/AD826

    Note: This item is only a bare board , not contain other parts , buyers need their own welding , Assembled photo only for reference. Gold seal LME49720HA + LME49600 high-performance, high-fidelity, high-current audio amplification buffer plate, can be used in the preceding stage, it can also drive high impedance headphones, meet the high demands of audiophiles. LME49600 is an audio buffer chip, which acts like a common drive among amp stage transistor, a current expanded features that can provide 250mA of current, providing a powerful driving force for the signal to the headphones.
    C $6.30
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    48 sold
  • 1 PCS parallel LM3886 x3 150W AUDIO POWER amplifier AMP PCB Circuit board DIY

    NOTE: This price is for only a single amplifier PCB. Two pcbs are needed to form a stereo amplifier. parallel LM3886 x3 150W amplifier PCB Circuit board DIY This is a high power amplifier bare PCB using National Semiconductor's renowned LM3886 power amplifier chip. The circuit uses design reference to the legendary Rowland power amplifier with three LM3886 in parallel to deliver 150W of continuous power. Product Specifications: Output Power:150W (8Ω) Operating voltage : Driver stage +/-15V to +/-32V Operating type : Class AB type DC amplifier. Input Impedance:47K Output Impedance:4-8Ω Features : PCB size:120MM x 79MM PCB thickness 1.6mm.
    C $8.93
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    Type: PCBColor: Blue
  • Universal 7pin 9pin Tube Amplifier Test DIY Experiment Prototyping Multi PCB

    One piece of double-sided universal prototyping board using high quality FR4 and many PTHs (plated through holes). The board can cater for: three 7 pin and three 9-pin sockets. PCB dimension: 120mm x 50mm. PCB thickness 1.6mm. Prototyping PCB hole diameter 0.9mm, pitch 2.5mm, component foot distance, tube foot distance, foot hole size design is reasonable, suitable for resistor or capacitor. components can be double-sided assembly welding, up and down the line arbitrary. The socket pins are marked on the front and back sides of the board for easy identification. Socket for the round hole and flat hole hole design, flat hole easy to weld than the round hole, and do not leak tin, apply a variety of tube DIY line use. It can also be sold around eight 3-bit standard terminals, as.
    C $3.80
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    Trending at C $4.21eBay determines this price through a machine-learned model of the product's sale prices within the last 90 days.
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    48 sold
  • 100W Class AB Audio Power Amplifier Board PCB based on Symasym5-3

    Item detail description , schematics , and need parts , please you view it in: HTTPS://www.lf-pro.net/mbittner/Sym5_Webpage/symasym5_3.html If you need Stereo output , please you buy 2pcs , thank you! Description: Symasym5, is a "cute" power amplifier, designed with quality but still low price in mind. This resulted in a ClassAB BJT amplifier, using only TO92 transistors for input and VAS, with a reasonable part count. The topology used is well known and consist of a single diffamp for input, plus a 2nd diffamp with current mirror for VAS. This is followed by normal darlington EF outputstage using modern high beta devices. The circuit uses large amounts of feedback over the whole audioband and an unconventional feedback compensation scheme.
    C $6.05
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    16 watching
  • Amplifier Board Post Circuit Bare PCB Amp Module Base on darTZeel NHB-108B 1:1

    1, the amplifier board with no large ring negative feedback amplifier circuit, making the sound really natural, pure like a glass of water; 2, power amplifier board with 1: 1 straight engraved, and the original machine dartzeel NHB-108 line exactly the same; 3, all components are clearly marked parameters, get the board to their own welding. 4, PCB size 80 * 115mm.
    C $11.76
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    53 sold
    Color: Green
  • 6DJ8 ECC88 E88CC Tube Buffer Pre-amplifier Preamp PCB For DAC CD Player Audio

    Mini bile buffer board, plus or minus 24v power supply, is also suitable for use in vehicles. The circuit diagram is as follows. According to this structure, the resistance parameter can be adjusted to support the 12au7 tube, and even 12V power supply can be used.
    C $6.05
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    Type: PCB
    69 sold
  • 1pc JLH 1969 class A Amplifier Board HiFi High Quality PCB MOT/2N3055 Diy Kits

    Operating voltage: DC 12V-35V (corresponding to 9-26V transformer) Output sound power: 10-15W or so. It can be pushed 3-8 inches, 120 watts of power bookshelf box, full-range boxes. Sensitivity to be higher than 83db. Board size: with angle aluminum long 10cm, width 8cm, height 3.8cm Adjustable between quiescent current 0.3-1.8A, recommended 1.2A (radiators need more than 0. 7 kg, it is recommended to listen to the sound quality, I feel satisfied to buy aluminum heat sink chassis, because to buy a separate radiator is not cheap).
    C $18.15
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    102 sold
  • 2PC PASS A3 Single-ended Class A Power Amplifier Bare PCB New

    This is 2PC PASS A3 bare PCB ( 2 channel PCB ). PCB Size: 122MMX74MM. Gain: 26 dB. Signal input support: balanced input or unbalanced input. We will try our best to reduce the risk of the custom duties.
    C $9.37
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    Was: Previous PriceC $10.41
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    Type: PCB
    12 watching
  • 6V6 PP Dynaco 10W THD 0.4% Very Musical Tube Power Stereo Amplifier PCB Board

    This is a bare PCB of a stereo 6V6 push-pull tube amplifier. The driver tube is a single 6SL7 at the input. The schematic is as shown in the picture below. Board thickness : 1.6mm PCB Dimension : 192mm x 91mm Copper thickness : 75um ( 4 times normal thickness) ; gold-plated surface. The schematic is as shown in the listing. We provide same schematic and assemble diagrams to buyers by EMAIL. The board is a single-side design. But we have fabricated the board such that all the holes are plate-through holes(PTH) so that they are very reliable during soldering and reworking. The board only contains the amplifier section. The transformer, rectifier diodes and power supply filtering section are not included.
    C $15.69
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    18 watching
    Color: Green
  • AC Dual 25V Power 120W*2 TDA7294 BTL AMP Power Amplifier Board PCB Bare Board

    The board uses four TDA7294 to form a two-channel BTL circuit. When the AC is dual 25V, the maximum rated output power can reach 120Wx2 when the load is 8 ohms. PCB size 165x80mm The package include: 1x AC Dual 25V Power 120W*2 TDA7294 BTL AMP Power Amplifier Board PCB Bare Board.
    C $6.59
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  • Unbalanced to Balanced Stereo Converter Pre-amplifier PCB Ultra Low Distortion

    This is the PCB of a very low distortion preamplifier(Gain=2) that can convert an unbalanced signal to a balanced signal. The circuit make uses of a famous balanced line receiver DRV134. The chip can offer a distortion as low as 0.0005% at 1KHz and 0.001% in the whole audio frequency band (below 18KHz) when driving 600ohm load! Maximum swing can be 18Vrms at 0.01% distortion! The gain is fixed at 6dB(2 times). Supply voltage: +/- 10V to + / - 15V (best +/- 12v).
    C $3.95
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    30 sold
  • Ultra-linear 6SL7 + 6V6 Push-pull Tube Power Amplifier Stereo Amp PCB 10W + 10W

    Ultra-linear Push-pull 6SL7 + 6V6 Tube Power Amplifier PCB (12W) PCB size: FR4 195X91X1.6MM Output power of 12W. The use of ultra-linear architecture, the output of each channel cattle connected five lines, together with the feedback and the filament, the PCB wiring will appear much more, but does not affect its excellent replay. This version without debugging, mature and stable circuit, as long as not installed wrong, power on the ring.
    C $11.23
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    37 sold
  • Universal Prototype PCB Board for 8Pin 7pin/9pin Tube Amplifier Preamp Valve Amp

    Three Small 7-pin / Octal (8-pin) sockets tube amplifiers universal prototyping PCB: Exquisite FR4 double-sided gold-plated glass plate, high-quality PCB board, thickness 2mm is not easy deformation, PCB size 173 × 84mm. Prototyping PCB hole diameter 0.9mm, pitch 2.5mm, component foot distance, tube foot distance, foot hole size design is reasonable, suitable for size within 3W power resistor or capacitor. Two tube sockets design, can be installed three small 7-pin, or three Octal 8-pin sockets, flexible with the use. The socket pins are marked on the front and back sides of the board for easy identification. Components can be double-sided assembly welding, up and down the line arbitrary. It can also be sold around eight 3-bit standard terminals, as power supply, input and output ter.
    C $5.13
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    Type: PCB
    68 sold
    Color: Gold
  • Hifi 2SA1943 2SC5200 Toshiba High Power Amplifier Board Mono 200W Audio Amp PCB

    Mono 200W max power amplifier board 1943+5200 power Toshiba tube power amplifier board Tip: This product is just a PCB blank and does not contain any components. Suppliers do not provide schematics. The board is mono, does not have rectifier circuit post-amp board, if you need two-channel stereo output, please buy 2pcs bare pcb. The circuit design uses the A970/C2240 high-withstand-voltage audio pair dual differential circuit, and the A1145/C2705 as the voltage amplification to drive the mid-power pair A1837/C4793, and the output stage uses the A1943/C5200 high-power Toshiba pair for a wide range of power supply. DC positive and negative 20V-50V can be, as long as enough power to easily reach 300W. The sound quality is good and the driving force is very strong. Pushing the 15-inch s.
    C $6.45
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    Type: PCB
    75 sold
  • Universal Prototyping PCB for tube amplifier 7 pin and 9 pin Ceramic tube socket

    One piece of double-sided universal prototyping board using high quality FR4 and many PTHs (plated through holes). The board can cater for: three 7 pin and three 9-pin sockets. PCB dimension: 120mm x 50mm. PCB thickness 1.6mm. Prototyping PCB hole diameter 0.9mm, pitch 2.5mm, component foot distance, tube foot distance, foot hole size design is reasonable, suitable for resistor or capacitor. components can be double-sided assembly welding, up and down the line arbitrary. The socket pins are marked on the front and back sides of the board for easy identification. Socket for the round hole and flat hole hole design, flat hole easy to weld than the round hole, and do not leak tin, apply a variety of tube DIY line use. It can also be sold around eight 3-bit standard terminals, as.
    C $5.23
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    104 sold
  • NE5532 Tone Board HiFi 2.1 CH Pre-amplifier Preamp PCB Subwoofer Bass Treble Adj

    This tone board uses 4 large S NE5532 as the main audio amplifier, compatible with JRC4558, AD827 and 0PA2604, can be changed according to their preferences to see the different tone styles. Technical parameters: 4 pieces of NE5532 (2 pieces for left and right channels audio amplification processing, and the other 2 pieces of 4th order low-pass filter for subwoofer output, adjustable frequency, adjustment range 50Hz-150Hz), potentiometers adjust from left to right For: subwoofer frequency; subwoofer volume; left and right channel treble; left and right channel bass; left and right channel volume; overall overall volume. (Six potentiometer center spacing is 20-20-20-20-30MM). Supply voltage: dual AC 12V- 18V, recommended dual 12V transformer 5-10W about can be. PCB board size: 120*55*1.6.
    C $5.27
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  • Mono 100W Class AB Audio Power Amplifier Board Bare PCB based on Symasym5-3

    Item detail description , schematics , and need parts , please you view it in: HTTPS://www.lf-pro.net/mbittner/Sym5_Webpage/symasym5_3.html If you need Stereo output , please you buy 2pcs , thank you! Description: Symasym5, is a "cute" power amplifier, designed with quality but still low price in mind. This resulted in a ClassAB BJT amplifier, using only TO92 transistors for input and VAS, with a reasonable part count. The topology used is well known and consist of a single diffamp for input, plus a 2nd diffamp with current mirror for VAS. This is followed by normal darlington EF outputstage using modern high beta devices. The circuit uses large amounts of feedback over the whole audioband and an unconventional feedback compensation scheme.
    C $6.05
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    Type: Board
    17 watching
  • LM1875T TDA2030A LM675 LM1875T Power BTL OCL AMP Amplifier PCB Blank Bare Board

    This PCB is suitable for the TDA2030/TDA2030A / LM1875T/LM675, compatible with OCL (dual channel) and BTL (mono) two installation styles,with big power, low distortion, sweet sound, etc. PCB Size : 55x105x1.6mm.
    C $3.10
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  • AC Dual 25V Power 120W*2 TDA7294 BTL AMP Power Amplifier Board PCB Bare Board

    The board uses four TDA7294 to form a two-channel BTL circuit. When the AC is dual 25V, the maximum rated output power can reach 120Wx2 when the load is 8 ohms. This link is a PCB (empty board), does not contain any components on the board, the main picture is installed with a picture of the component for reference during production.
    C $6.54
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    76 sold
  • E834 RIAA MM Tube phono stage amplifier bare PCB base on EAR834 Amp Circuit

    Reference English edition EAR834 phono (MM amp part) design, two independent single-channel, one-point ground, no background noise. above 0.8A. PCB size: 100 150 1.6MM 1OZ copper, FR4 A-class plate, gold-plated technology.
    C $10.03
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    11 watching
  • DC ±20-28V 68W LM3886TF HIFI power amplifier board PCB parallel bare boarHF-ODFA

    C $6.90
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    Was: Previous PriceC $7.26
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