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EAR 509 Mono Power Amplifier (Pair)

EAR 509 Mono Power Amplifier (Pair)
EAR 509 Mono Power Amplifier (Pair)EAR 509 Mono Power Amplifier (Pair)EAR 509 Mono Power Amplifier (Pair)EAR 509 Mono Power Amplifier (Pair)EAR 509 Mono Power Amplifier (Pair)
(£10,415.83 Exc. VAT)

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Free U.K. Delivery


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01892 532 995

EAR Yoshino
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Why buy from us?

EAR Yoshino 509 Mono Power Amplifier (Pair)

Studio grade, high performing valve monoblocks. Powerful yet compact with 100 watts per channel incased in a classic chrome chassis design. With three decades of production, its reliability is a testament to its lack of compromise.

Classic beauty
The EAR 509 mono was born to serve professional studios. The nature of high fidelity in studios makes it perfectly suited for audio playback in the home.

The 100 Watt mono is a Tim de Paravicini design classic that has been in continual production for over 30 years. Its timeless rectilinear form is hand finished in polished chrome giving a clean and elegant look. Despite its high power, it has been refined to be densely packaged without sacrificing any performance enabling the compact design.

Limitless possibilities
The EAR 509 have been built with reliability at its heart, backed up by three decades of servicing experience for the product.

Changing valves is intuitive with the EAR 509’s self- biasing. Accurately set the operational biasing by adjusting two sets of dials. With four LEDs, it informs you that it’s set with equal intensity, allowing you to easily adjust the biasing when necessary.

Shipping typically 12-16 weeks

Double the output
Tim de Paravicini designed the EAR 509s with industrial grade components for reliability and performance. Built to handle the demands of professional audio environments, we added the option for it to be equipped with balanced inputs for those -professional applications.

With all of our products, we put a high level of care with the end performance. Take our selection of valves for instance. Each mono and its valves are unique. We analyse a wide selection of valves to find the most suitable match before pairing each EAR 509 for stereo. Giving the highest quality output.

Bespoke from the ground up
EAR Yoshino’s transformers sing with just about anything. Tim de Paravicini bespoke designed both output and power transformers with music in mind. We hand-build them locally and then rigorously test them to ensure they meet our exacting standards. We then engineered the EAR 509s to take full advantage of this quality while maintaining the 100 watt output.


  • Two PL509 (EL519)
  • Two ECC83 (12AX7)
  • One ECC85 (6AQ8)


  • Frequency response: 3 Hz-30 Khz +0 -1dB
  • Signal-to-noise ratio: 96dB
  • Distortion (I.M.D.): <0.2%
  • Harmonic Distortion: -3dB <0.5% 12 Hz-60Kz
  • Input Sensitivity (unbalanced): 1.2V
  • Input Impedance (unbalanced): 25KO
  • Output Damping Factor: 20


  • One Line Input (RCA) or Balanced Input (XLR)


  • Power output (20-20KHz): 100W into 4 & 8O

Dimensions & Weight

  • Weight: 15.3kg (34lb)
  • Length: 300mm (12”)
  • Width: 254mm (10”)
  • Height: 150mm (6”)


  • Power Consumption: 180 watts
  • 240 volt / 110 Volt / 100 Volt

UK Delivery

  • FREE delivery via DPD Local By 12pm on orders to value over £300, including one hour delivery window service 'Predict & Follow My Parcel'.
  • Royal Mail Special Delivery By 1pm costs between £5.00 - £10.00 on orders to value under £300, dependent on weight.
  • Saturday or Sunday delivery available upon request for supplemental charge.

EU Delivery

  • £25 delivery charge 'Flat Fee' via DHL Europe by Road service (5-7 days) which provides comprehensive tracking of shipments online.
  • £50 delivery charge 'Flat Fee' via DHL Europe by Air service  (2-3 days) which provides comprehensive tracking of shipments online.
    Receiver is responsible for the payment of local Duties and Taxes.

USA & Canada Delivery

  • Services based on your order being shipped to the U.S. and Canada are calculated as follows:
    £100 delivery charge 'Flat Fee' via DHL international 'Day Definite' service per parcel.
    Receiver is responsible for the payment of local Duties and Taxes.


  • Not all products are available for order into Europe, USA & Canada


  • Full manufacturer's warranty on all new purchases. Standard warranty is typically 12 months to 2 years with some goods coming with 6 years manufacturer's warranty.
  • Goods purchased in UK and EU are covered by the Consumer Contracts Regulations.

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