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The Amplimo 20PP8K0S is a wide bandwidth toroidal tube output transformer for push-pull amplifier designs, offering 20 W nominal power, an 8 kΩ primary, 0-4-8 Ω secondary taps, and 35% ultralinear taps in a compact 85 mm x 40 mm package.
Amplimo 20PP8K0S Wide bandwidth toroidal tube output transformer 20 W 8 kΩ
The Amplimo 20PP8K0S is designed for tube amplifiers that require a push-pull output transformer with an 8000 Ω primary impedance. As one of the key audio components in the output stage, it provides secondary connections for 0, 4 Ω, and 8 Ω loudspeaker loads.
With a nominal power rating of 20 W, this toroidal transformer combines a compact form factor with wide frequency performance. Its -3 dB bandwidth reaches from 7 Hz to 80 kHz at 1 mW, while the power bandwidth starts at 35 Hz, supporting stable wideband operation in suitable tube amplifier designs.
The transformer includes 35% ultralinear taps and specified turns ratios of 44.8 for 4 Ω and 31.5 for 8 Ω operation. Use only one secondary tap at a time, selecting either the 4 Ω or 8 Ω output connection according to the connected speaker load.
Electrical construction details include 1220 H primary inductance, 18 mH primary leakage inductance, 390 pF primary capacitance, and 152 Ω primary DC resistance. The secondary DC resistance is 145 mΩ at 4 Ω and 250 mΩ at 8 Ω. Installation is supported by toroidal clamp and washer mounting hardware, with overall dimensions of 85 mm outside diameter by 40 mm height.
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Speakers
Amplifiers
DAC converters
DSP modules
Turntables
Streamers
Woofers
Tweeters
Exciters
Bass shakers
Plate amplifiers
Amplifier modules
Single board computers
Assembled crossovers
Printed Circuit Boards (PCB)
Capacitors
Resistors
Coils
Circuit Breakers
Crossover tools
Screw terminals
Acoustic measurements
Electric measurements
Sound level meters
DIY amplifier kits
DIY component packs
DIY speaker kit
DIY subwoofer kits
DIY bluetooth speaker
DIY electronics kits
Binding posts
Cabinet Hardware
Cables
Connectors
Speaker cabinets
Electromechanics
Power supplies
Speaker repair
Workshop & tools
Amplifier accessories
Stands & mounts
Gift voucher
Books
New products
