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Results 1-40 of 7912
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How to understand Watt?
 
How to understand Watt?
..........................
Click here for specs, downloads and more pictures.
Preamplifier
 
A preamplifier to use with an electret or other microphone to boost the signal before feeding into an amplifier. Simple and easy to build. PCB Size: 1.75" x 1.25". Power supply: 6 to 12VDC (Electret microphone Included)
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  Kit - Basic Soldering Required  
  CPS98  
  18  
 
..........................
Click here for specs, downloads and more pictures.
Preamplifier (Assembled)
 
A preamplifier to use with an electret or other microphone to boost the signal before feeding into an amplifier. Simple and easy to build. PCB Size: 1.75" x 1.25". Power supply: 6 to 12VDC (Electret microphone Included)

NOTE: Please allow 24 hours for assembly!
Price: $28.38
  Assembled and Tested  
  CPS98-TBA  
  18  
 
..........................
Click here for specs, downloads and more pictures.
UNIVERSAL MONO PRE-AMPLIFIER
 
This kit has been developed as pre-module for a number of audio applications where there is insufficient input signal. Applications as a microphone pre-amplifier or for level correction. Specifications power supply: 10-30V DC / 10mA output impedance: 1Kohm adjustable output level: max. 40dB frequency range: 20Hz to 20kHz ± 3dB max. input signal: 40mV PCB dimensions: 1.2" x 1.7" options for power supply: K1823 (K1803)
Quantity
Price
1 – 9$11.54
10 – 99$10.94
100 +$9.99

  Kit - Basic Soldering Required  
  K1803  
  6  
 
..........................
Click here for specs, downloads and more pictures.
UNIVERSAL MONO PRE-AMPLIFIER (Assembled)
 
This assembled module has been developed as a pre-amplifier for a number of audio applications where there is insufficient input signal. Applications as a microphone pre-amplifier or for level correction. Specifications power supply: 10-30V DC / 10mA output impedance: 1Kohm adjustable output level: max. 40dB frequency range: 20Hz to 20kHz ± 3dB max. input signal: 40mV PCB dimensions: 1.2" x 1.7" options for power supply: K1823 (K1803)

NOTE: Please allow 24 hours for assembly!
Quantity
Price
1 – 9$25.43
10 – 99$22.55
100 +$20.18

  Assembled and Tested  
  K1803-TBA  
  6  
 
..........................
Click here for specs, downloads and more pictures.
UNIVERSAL STEREO PRE-AMPLIFIER
 
Specifications:
  • frequency range: 40Hz - 30kHz (-3dB)
  • max. input voltage: 50mVrms
  • adjustable gain: 40dB max. 
  • output impedance: 1Kohm
  • power supply: 10-30V DC / 5mA 
  • PCB dimensions: 1.7" x 2.6" 
  • recommended transformer: K1823 

(K2572)
Quantity
Price
1 – 9$17.01
10 – 99$16.09
100 +$14.75

  Kit - Basic Soldering Required  
  K2572  
  9  
 
..........................
Click here for specs, downloads and more pictures.
UNIVERSAL STEREO PRE-AMPLIFIER (Assembled)
 
Specifications:
  • frequency range: 40Hz - 30kHz (-3dB)
  • max. input voltage: 50mVrms
  • adjustable gain: 40dB max.
  • output impedance: 1Kohm
  • power supply: 10-30V DC / 5mA
  • PCB dimensions: 1.7" x 2.6"
  • recommended transformer: K1823

(K2572)

NOTE: Please allow 24 hours for assembly!
Quantity
Price
1 – 9$32.98
10 – 99$30.65
100 +$27.39

  Assembled and Tested  
  K2572-TBA  
  9  
 
..........................
Click here for specs, downloads and more pictures.
STEREO RIAA PRE-AMPLIFIER
 

RIAA stereo pre-amplifier for md pick-ups. Low noise.


Specifications:


  • supply voltage: 10 -30V DC / 5mA regulated
  • gain (1kHz): 35dB
  • input signal: 5 - 10mV
  • input impedance: 47Kohm
  • PCB dimensions: 1.7 x 2.6"
  • recommended transformer: K1823
Quantity
Price
1 – 9$16.42
10 – 99$15.55
100 +$14.26

  Kit - Basic Soldering Required  
  K2573  
  4  
 
..........................
Click here for specs, downloads and more pictures.
STEREO RIAA PRE-AMPLIFIER (Assembled)
 

RIAA stereo pre-amplifier for md pick-ups. Low noise.

Specifications:

  • supply voltage: 10 -30V DC / 5mA regulated
  • gain (1kHz): 35dB
  • input signal: 5 - 10mV
  • input impedance: 47Kohm
  • PCB dimensions: 1.7 x 2.6"
  • recommended transformer: K1823


NOTE: Please allow 24 hours for assembly!
Quantity
Price
1 – 9$32.15
10 – 99$29.46
100 +$26.60

  Assembled and Tested  
  K2573-TBA  
  4  
 
..........................
Click here for specs, downloads and more pictures.
Stereo Preamplifier - Tone Control Unit
 
This is a preamplifier and tone control unit
which will make a useful addition to any
of our power amplifier kits. It is extremely
easy to construct due to the use of a special IC,
the Philips TDA 1524A. This contains all the
circuitry required to provide up to 20 dB of
voltage gain, +/-15 dB of bass and treble
control, channel balance, and a switchable
loudness contour. 
(CPS100)
Quantity
Price
1 – 9$28.59
10 – 99$26.55
100 +$25.67

  Kit - Basic Soldering Required  
  CPS100  
  9  
 
..........................
Click here for specs, downloads and more pictures.
Stereo Preamplifier - Tone Control Unit (Assembled)
 
This is a preamplifier and tone control unit which will make a useful addition to any of our power amplifier kits. It is extremely easy to construct due to the use of a special IC, the Philips TDA 1524A. This contains all the circuitry required to provide up to 20 dB of voltage gain, +/-15 dB of bass and treble control, channel balance, and a switchable loudness contour.
(CPS100)

NOTE: Please allow 24 hours for assembly!
Price: $48.28
  Assembled and Tested  
  CPS100-TBA  
  9  
 
..........................
Click here for specs, downloads and more pictures.
VOLUME AND TONE CONTROL - PREAMPLIFIER
 

When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control.
This kit comes complete with all input / output connections and potentiometers.
Furthermore it is possible to amplify or attenuate the input signal.

Features:
  • stereo volume control
  • stereo Baxandall bass and treble control
  • bass and treble potentiometers with centre click
  • customizable attenuation or amplification
  • complete with knobs
Quantity
Price
1 – 9$29.65
10 – 99$27.54
100 +$26.62

  Kit - Basic Soldering Required  
  K8084  
  2  
 
..........................
Click here for specs, downloads and more pictures.
VOLUME AND TONE CONTROL - PREAMPLIFIER (Assembled)
 

When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control.
This kit comes complete with all input / output connections and potentiometers.
Furthermore it is possible to amplify or attenuate the input signal.

Features:
  • stereo volume control
  • stereo Baxandall bass and treble control
  • bass and treble potentiometers with centre click
  • customizable attenuation or amplification
  • complete with knobs


NOTE: Please allow 24 hours for assembly!
Price: $50.42
  Assembled and Tested  
  K8084-TBA  
  2  
 
..........................
Click here for specs, downloads, and more pictures.
SUPER STEREO EAR KIT
 
Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, … With volume control and on/off switch.

Specifications:
  • power supply: 3 1.5V AA battery (not included) 
  • dimensions: 2.4" x 2.1" x 1.7" 
  • (MK136)
Quantity
Price
1 – 9$9.95
10 – 99$9.56
100 – 999$8.76
1000 +$7.99

  Kit - Basic Soldering Required  
  MK136  
  14  
 
..........................
Click here for specs, downloads, and more pictures.
SUPER STEREO EAR KIT (Assembled)
 
Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, … With volume control and on/off switch.

Specifications:
  • power supply: 3 1.5V AA battery (not included)
  • dimensions: 2.4" x 2.1" x 1.7"
  • (MK136)


NOTE: Please allow 24 hours for assembly!
Price: $20.95
  Assembled and Tested  
  MK136-TBA  
  14  
 
..........................
Click here for specs, downloads and more pictures.
TELEPHONE AMPLIFIER
 
This telephone amplifier may be used as a free-standing amplifier with speaker, e.g. to listen to a telephone conversation, or the output may be connected to an amplifier or mixing panel (e.g. radio stations). 

Specifications: 
  • input: isolation transformer interface
  • speaker output: 0.5W / 8ohm 
  • line output: 0dB (0.775Vrms)
  • power supply: 7 - 9V AC or 9 - 12V DC / 150mA 
  • PCB dimensions: 2.5" x 2.1" 
  • recommended housing: G416
  • recommended transformer: - 
  • recommended adapter: 

(K4900)
Quantity
Price
1 – 9$15.73
10 – 99$14.89
100 +$13.66

  Kit - Basic Soldering Required  
  K4900  
  2  
 
..........................
Click here for specs, downloads and more pictures.
TELEPHONE AMPLIFIER (Assembled)
 
This telephone amplifier may be used as a free-standing amplifier with speaker, e.g. to listen to a telephone conversation, or the output may be connected to an amplifier or mixing panel (e.g. radio stations).

Specifications:
  • input: isolation transformer interface
  • speaker output: 0.5W / 8ohm
  • line output: 0dB (0.775Vrms)
  • power supply: 7 - 9V AC or 9 - 12V DC / 150mA
  • PCB dimensions: 2.5" x 2.1"
  • recommended housing: G416
  • recommended transformer: -
  • recommended adapter:

(K4900)

NOTE: Please allow 24 hours for assembly!
Price: $25.78
  Assembled and Tested  
  K4900-TBA  
  2  
 
..........................
Click here for specs, downloads and more pictures.
1W Stereo Audio Amp Module KA2209 (ver 2
 
This stereo amplifier module uses the Samsung KA2209 8-pin IC. This is equivalent to the TDA2822. The circuit is the standard text-book circuit for this chip. No heat sink is required. 2-9 volt operation. (CPS87) (version 2)
Quantity
Price
1 – 9$16.53
10 – 99$15.66
100 +$14.36

  Kit - Basic Soldering Required  
  CPS87  
  12  
 
..........................
Click here for specs, downloads and more pictures.
1W Stereo Audio Amplifier Module KA2209 (Assembled)
 
This stereo amplifier module uses the Samsung KA2209 8-pin IC. This is equivalent to the TDA2822. The circuit is the standard text-book circuit for this chip. No heat sink is required. 2-9 volt operation. (CPS87) (version 2)

NOTE: Please allow 24 hours for assembly!
Price: $31.52
  Assembled and Tested  
  CPS87-TBA  
  12  
 
..........................
Click here for specs, downloads and more pictures.
audio amplifier 1W (LM386) kit
 
A kit module designed to be used as a building block in a larger project. The semiconductor LM386 is a general purpose power amplifier designed for use in low voltage applications. Gain may be set between 20 and 200. LM386 data sheet included. Supply voltage: 4 to 12V(CPS17)
PCB size: 1.5in x 1.25in (38mm x 31mm)
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  Kit - Basic Soldering Required  
  CPS17  
  8  
 
..........................
Click here for specs, downloads and more pictures.
audio amplifier 1W (LM386) kit (Assembled)
 
A kit module designed to be used as a building block in a larger project. The semiconductor LM386 is a general purpose power amplifier designed for use in low voltage applications. Gain may be set between 20 and 200. LM386 data sheet included. Supply voltage: 4 to 12V(CPS17)
PCB size: 1.5in x 1.25in (38mm x 31mm)

NOTE: Please allow 24 hours for assembly!
Price: $28.38
  Assembled and Tested  
  CPS17-TBA  
  8  
 
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tn_cps27.jpg
TDA7052 Amplifier Module 1W (kit)
 
A 1W power amplifier building block designed to be part of a larger project. Ideal as a low power battery operated amplifier (from 3 to 15V) driving an 8 ohm speaker. The Philips TDA7052 is a general purpose amplifier. No heatsink needed. Short circuit protected. PCB size: 1.2" x 1.2" (30mm x 30mm)
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  Kit - Basic Soldering Required  
  CPS27  
  74  
 
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tn_cps27.jpg
TDA7052 Amplifier Module 1W (Assembled)
 
A 1W power amplifier building block designed to be part of a larger project. Ideal as a low power battery operated amplifier (from 3 to 15V) driving an 8 ohm speaker. The Philips TDA7052 is a general purpose amplifier. No heatsink needed. Short circuit protected. PCB size: 1.2" x 1.2" (30mm x 30mm)

NOTE: Please allow 24 hours for assembly!
Quantity
Price
1 – 9$28.38
10 – 99$25.72
100 +$23.00

  Assembled and Tested  
  CPS27-TBA  
  74  
 
..........................
Click here for specs, downloads and more pictures.
PCB only of the K27 (CPS27)
 
This is the PCB only of the CPS27 / K27 (TDA7052 Amplifier Module 1W)
Quantity
Price
1 – 9$11.97
10 – 99$11.34
100 +$10.40

  Component or Part  
  BB268  
  7  
 
..........................
Click here for specs, downloads and more pictures.
1W Stereo Amplifier Module DC Volume con
 
This is a 1 watt stereo amplifier module Kit using the TDA 7053A from Philips. It uses a DC voltage to control gain, hence a single gang pot or switch can be used as a volume control with minimal tracking error. It will operate from 4.5 – 18 V DC and requires no heat-sink for normal use. TPCB size 1 1/2"x1 3/4" (CPS139)
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  Kit - Basic Soldering Required  
  CPS139  
  37  
 
..........................
Click here for specs, downloads and more pictures.
1W Stereo Amplifier Module DC Volume con (Assembled)
 
This is a 1 watt stereo amplifier module Kit using the TDA 7053A from Philips. It uses a DC voltage to control gain, hence a single gang pot or switch can be used as a volume control with minimal tracking error. It will operate from 4.5 – 18 V DC and requires no heat-sink for normal use. TPCB size 1 1/2"x1 3/4" (CPS139)

NOTE: Please allow 24 hours for assembly!
Price: $28.38
  Assembled and Tested  
  CPS139-TBA  
  37  
 
..........................
Click here for detailed specs.
1W Stereo Amplifier Module
 
Uses 2 LM386N-1 for a stereo amplifier. Ideal for walkman and other battery powered items. 4V - 12V DC. Instructions PCB and components supplied.

This is a 1 watt per channel, stereo amplifier module Kit using two LM386N IC’s from National Semiconductor. It is basically two of our CPS17’s on a single PC board, with a dual gang pot. It will operate best from 6-12V DC and will work well from a battery since the quiescent current drain is only 10 mA. It requires no heat sinks for normal use. The input and output are both ground referenced. Maximum output will be obtained with a 12V power supply and 8 ohm speaker, however it is particularly suitable for driving headphones from a supply as low as 4V. Speakers are not supplied. They should be rated at 3W or over. PCB size 63mm x 40mm (2.5" x 1.5"). (CPS115)
Quantity
Price
1 – 9$15.96
10 – 99$15.12
100 +$13.86

  Kit - Basic Soldering Required  
  CPS115  
  28  
 
..........................
Click here for detailed specs.
1W Stereo Amplifier Module (Assembled)
 
Uses 2 LM386N-1 for a stereo amplifier. Ideal for walkman and other battery powered items. 4V - 12V DC. Instructions PCB and components supplied. This is a 1 watt per channel, stereo amplifier module Kit using two LM386N IC’s from National Semiconductor. It is basically two of our CPS17’s on a single PC board, with a dual gang pot. It will operate best from 6-12V DC and will work well from a battery since the quiescent current drain is only 10 mA. It requires no heat sinks for normal use. The input and output are both ground referenced. Maximum output will be obtained with a 12V power supply and 8 ohm speaker, however it is particularly suitable for driving headphones from a supply as low as 4V. Speakers are not supplied. They should be rated at 3W or over. PCB size 63mm x 40mm (2.5" x 1.5"). (CPS115)

NOTE: Please allow 24 hours for assembly!
Price: $29.95
  Assembled and Tested  
  CPS115-TBA  
  28  
 
..........................
Click here for specs, downloads and more pictures.
2W amplifier module LM380
 
This is a very simple amplifier built around the LM380 IC. It can deliver up to 2W into an 8 ohm speaker depending on the supply voltage. Instead of using a heatsink or heat fins the heat produced is dissipated through the center pins of the IC into the copper overlay left on the PCB. If you do require a sustained output of more than ½ watt, you will need to add a heatsink (not included). The IC solders directly to the PCB.
PCB size: 1.75in x 1.75in (45mm x 45mm)


Power output:
> 2 Watt max. (4-8 ohms, 20V)
> 1 Watt max. (4-8 ohms, 12V)
> 0.5 Watt RMS continuous

 
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  Kit - Basic Soldering Required  
  CPS97  
  5  
 
..........................
Click here for specs, downloads and more pictures.
2W amplifier module LM380 (Assembled)
 
This is a very simple amplifier built around the LM380 IC. It can deliver up to 2W into an 8 ohm speaker depending on the supply voltage. Instead of using a heatsink or heat fins the heat produced is dissipated through the center pins of the IC into the copper overlay left on the PCB. If you do require a sustained output of more than ½ watt, you will need to add a heatsink (not included). The IC solders directly to the PCB.
PCB size: 1.75in x 1.75in (45mm x 45mm)

Power output:
> 2 Watt max. (4-8 ohms, 20V)
> 1 Watt max. (4-8 ohms, 12V)
> 0.5 Watt RMS continuous


NOTE: Please allow 24 hours for assembly!
Price: $29.17
  Assembled and Tested  
  CPS97-TBA  
  5  
 
..........................
Click here for detailed specs.
3W Mono Amplifier (kit)
 
Small but powerful amplifier suits a wide range of applications such as : microphone amp, for doorbells, melody generators, intercom, sound effects, earphones, radio receivers, PC sound card, musical instrument, etc.

Features:

  • compact size
  • low part count
  • no additional heatsink required
  • single supply
  • wide supply range
  • excellent protection
Quantity
Price
1 – 9$14.36
10 – 99$13.59
100 +$12.47

  Kit - Basic Soldering Required  
  K8066  
  7  
 
..........................
Click here for detailed specs.
3W Mono Amplifier (Assembled)
 
Small but powerful amplifier suits a wide range of applications such as : microphone amp, for doorbells, melody generators, intercom, sound effects, earphones, radio receivers, PC sound card, musical instrument, etc.

Features:

  • compact size
  • low part count
  • no additional heatsink required
  • single supply
  • wide supply range
  • excellent protection


NOTE: Please allow 24 hours for assembly!
Price: $29.32
  Assembled and Tested  
  K8066-TBA  
  7  
 
..........................
Click here for detailed specs.
3W Stereo Amplifier Module BA5406
 
A simple stereo 3 watt per channel amplifier based on the BA5406 power amplifier monolithic IC. Minimum component count. Runs on 12Vdc power supply. Good general purpose amplifier. PCB size: 67mm x 38mm. (2.6" x 1.5") Requires heatsink (supplied.)(CPS90)
Quantity
Price
1 – 9$20.52
10 – 99$19.44
100 +$17.82

  Kit - Basic Soldering Required  
  CPS90  
  19  
 
..........................
Click here for detailed specs.
3W Stereo Amplifier Module BA5406 (Assembled)
 
A simple stereo 3 watt per channel amplifier based on the BA5406 power amplifier monolithic IC. Minimum component count. Runs on 12Vdc power supply. Good general purpose amplifier. PCB size: 67mm x 38mm. (2.6" x 1.5") Requires heatsink (supplied.)(CPS90)

NOTE: Please allow 24 hours for assembly!
Price: $36.24
  Assembled and Tested  
  CPS90-TBA  
  19  
 
..........................
Click here for specs, downloads and more pictures.
Introduction to Class AB Amplifiers
 
Using amplifier modules is modern, quick and easy but it teaches nothing about how they work. Here is a Class AB amplifier made from individual components which will deliver several watts of power into an ordinary 8 ohm speaker. Gives hands-on learning about cross-over distortion, bootstrapping, complementary pairs, and push-pull. Detailed explanations given. Terminal strips are used for inputs and outputs. Use two 9 volt batteries. PCB Size: 2in (L) X 1.5in (W) (CPS48)
Quantity
Price
1 – 9$18.24
10 – 99$17.28
100 +$15.84

  Kit - Basic Soldering Required  
  CPS48  
  16  
 
..........................
Click here for specs, downloads and more pictures.
Introduction to Class AB Amplifiers (Assembled)
 
Using amplifier modules is modern, quick and easy but it teaches nothing about how they work. Here is a Class AB amplifier made from individual components which will deliver several watts of power into an ordinary 8 ohm speaker. Gives hands-on learning about cross-over distortion, bootstrapping, complementary pairs, and push-pull. Detailed explanations given. Terminal strips are used for inputs and outputs. Use two 9 volt batteries. PCB Size: 2in (L) X 1.5in (W) (CPS48)

NOTE: Please allow 24 hours for assembly!
Price: $33.10
  Assembled and Tested  
  CPS48-TBA  
  16  
 
..........................
Click here for specs, downloads, and more pictures.
2X5W AMPLIFIER FOR MP3 PLAYER
 
Features:
  • big sound from a small unit
  • low distortion
  • input: stereo 3.5mm jack
  • volume adjust complete with attractive knob
  • slide on/off switch
  • blue indicator led
Quantity
Price
1 – 9$16.99
10 – 99$16.12
100 +$14.78

  Kit - Basic Soldering Required  
  MK190  
  4  
 
..........................
Click here for specs, downloads, and more pictures.
2X5W AMPLIFIER FOR MP3 PLAYER (Assembled)
 
Features:
  • big sound from a small unit
  • low distortion
  • input: stereo 3.5mm jack
  • volume adjust complete with attractive knob
  • slide on/off switch
  • blue indicator led


NOTE: Please allow 24 hours for assembly!
Price: $32.98
  Assembled and Tested  
  MK190-TBA  
  4  
 
..........................
Click here for specs, downloads and more pictures.
7W MONO AUDIO AMPLIFIER- kit
 
This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The IC is completely thermally and short-circuit protected. A conventional direct current can be connected as supply.
(K4001)
Quantity
Price
1 – 9$15.29
10 – 99$14.49
100 +$13.29

  Kit - Basic Soldering Required  
  K4001  
  3  
 
..........................
Click here for specs, downloads and more pictures.
ASSEMBLED 7W AMPLIFIER
 
NEW - LOWER PRICE!
Price was: $16.88
This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The IC is completely thermally and short-circuit protected. A conventional direct current can be connected as supply.

Features:

also available in kit version: K4001

Specifications:

music power output: 7W / 4ohm
output: 3.5Wrms / 4ohm or 2Wrms / 8ohm
total harmonic distortion: 0.05% (1W / 1kHz)
frequency response: 20Hz to 20kHz (-3dB)
signal-to-noise ratio: 86dB (A weighted)
input sensitivity: 40mV / 150Kohm
overload and short-circuit protected
supply voltage: 15V DC (8 to 18V DC possible) / 0.5A
dimensions: 2.2" x 1.4"
(VM114)
Quantity
Price
1 – 9$15.92
10 – 99$14.78
100 +$14.29

  Assembled and Tested  
  VM114  
  10  
 
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