SKU: 45157313134

EAR Yoshino 509 Monoblock Pair

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Description

EAR Yoshino 509 Monoblock PairClassic Beauty The EAR 509 mono amplifier, designed by the acclaimed Tim de Paravicini, has been a staple in professional studios and homes alike for over 30 years. Known for its high fidelity and robust 100 watt output, this timeless piece is meticulously crafted with a polished chrome finish that complements its rectilinear form, achieving a sleek and elegant aesthetic. Its compact design is a testament to its refined engineering, packing immense

Classic Beauty

The EAR 509 mono amplifier, designed by the acclaimed Tim de Paravicini, has been a staple in professional studios and homes alike for over 30 years. Known for its high fidelity and robust 100-watt output, this timeless piece is meticulously crafted with a polished chrome finish that complements its rectilinear form, achieving a sleek and elegant aesthetic. Its compact design is a testament to its refined engineering, packing immense power without compromising on performance.

Limitless Possibilities

Built on a foundation of reliability, the EAR 509 benefits from three decades of expertise in servicing and design. Its intuitive self-biasing system simplifies valve adjustments with two sets of dials and four LEDs that ensure equal intensity, making it easy to maintain optimal performance.

Double the Output

The EAR 509s are engineered with industrial-grade components to withstand the rigours of professional audio environments. Optional balanced inputs cater to professional-grade applications, enhancing versatility. Each unit is uniquely matched with carefully selected valves to ensure the highest quality stereo output, reflecting our commitment to superior audio performance.

Bespoke from the Ground Up

At EAR Yoshino, we believe that exceptional audio starts with exceptional components. Tim de Paravicini has personally designed each output and power transformer with the finest musical experiences in mind. Locally hand-built and rigorously tested, these transformers ensure that the EAR 509s leverage their full 100-watt output capacity, delivering sound that resonates with clarity and depth.

Specifications

Valves:

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

Performance:

  • Frequency Response: 3Hz-30Khz (-1dB)
  • Signal-to-Noise Ratio: 96dB
  • Intermodulation Distortion (I.M.D.): 0.2%
  • Harmonic Distortion: 0.5% at 12Hz-60Kz (-3dB)

Connectivity:

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

Output:

  • Power Output: 100W into 4 and 8Ω (20-20KHz)

Dimensions and Weight:

  • Weight: 15.3kg
  • Dimensions: 300mm (L) x 254mm (W) x 150mm (H)

Power:

  • Consumption: 180 watts

With its unmatched craftsmanship and enduring performance, the EAR 509 mono amplifier continues to be a paragon of classic audio engineering, delivering limitless possibilities for audiophiles and professionals alike.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 45157313134

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K. Hansen
Boise, US
★★★★★ 5
Good taste
Size: 2.32 Pound (Pack of 1), Style: New
Tastes like tang. Take daily to reduce cholesterol.
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Reviewed in the United States on February 25, 2026
A
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Alison Lindley
Houston, US
★★★★★ 5
Great Seller and Product
Size: 2.32 Pound (Pack of 1), Style: New
Wonderful customer service!! I needed to refund as I ordered by mistake, and they refunded right away!! Will order again from this seller.
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Reviewed in the United States on March 26, 2026
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Public Service Announcement
Belleville, US
★★★★★ 5
Wow. This book takes time to read!!
Format: Hardcover
Ordered The Unseen Realm (Expanded Edition) and it turned out to be one of the more thought-provoking reads I’ve come across on biblical theology. What stood out most is how much it stretched my thinking on the heavenly council. The way the author walks through Scripture and builds that framework forces you to slow down and reconsider passages you may have read many times without catching the broader context. It’s detailed, but not in a way that feels inaccessible. There’s a lot of depth here, especially if you’re willing to follow the argument and check the references. It doesn’t just make claims—it works through them. I didn’t agree with every conclusion, but that didn’t take away from the value. If anything, it pushed me to think more carefully and engage the material at a deeper level. Compared to other books in this space, this one stands out for how it ties together Old and New Testament themes in a more cohesive way. For the price, it’s a great value. There’s a lot of substance here, and it’s the kind of book you’ll likely revisit rather than read once and move on. If you’re interested in the supernatural framework of Scripture and are open to having your assumptions challenged, this is a strong read.
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Reviewed in the United States on April 19, 2026
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fitzalling
Grantham, US
★★★★★ 5
Eye-opening Exposition of the Bible
Format: Paperback
I have the paperback which is 387 pages, plus Acknowledgments and Index. The book is well-written. I am a Christian and have read the Bible many times. Dr. Heiser's exposition on portions of the Bible were not something I had encountered before. I'll let Dr. Heiser speak for himself: "My goal is simple. When you open your Bible, I want you to be able to see it like ancient Israelites or first-century Jews saw it, to perceive and consider it as they would have. I want their supernatural worldview in your head." Pg. 13. Genesis 6:1-5, Psalm 82, Deuteronomy 32 and other Biblical passages, including New Testament passages reflect a worldview that at least to me was unfamiliar. His approach to exegesis of the Bible seems orthodox to me. Once again, I'll let Dr. Heiser speak for himself: "I still believe in the uniqueness of the God of the Bible. I still embrace the deity of Christ." Pg. 13. Nevertheless, looking at the Bible through this worldview is, for me, deeply affecting and not in a negative way. The existence of a heavenly host, not all of which honor God, God's desire for an Eden even after the failure of the first Eden, and three rebellions, not just one, all based on divine Scripture, were deeply educational and enlightening to me. The author argues for his points carefully and cites numerous scholarly treatises to support his arguments. The book also makes connections within the Bible to connect various passages, which a first-century Jew or Christian, assuming some literacy, would have recognized that a 21st century Christian, such as me, completely misses. The cosmic geography idea is not something I have encountered before. The book also provides background on the interpretation of Hebrew words and the author is careful to focus the range of acceptable interpretations. Elohim, in particular, gets careful exposition. If the topic interests you, I recommend the book highly. If you'd like to try out the late Dr. Heiser's thoughts first, he has a number of YouTube videos running from 15 minutes to 1+hour in length for you to watch.
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Reviewed in the United States on October 6, 2025
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Benjamin P
Draper, US
★★★★★ 5
Great Depth, Beautiful Edition.
Format: Hardcover
The deluxe hardcover is gorgeous, with art on the inside of the cover and diagrams and footnotes galore. I will say the footnotes get pretty deep, almost as many of them as there is "normal" text. But very, very well done deluxe anniversary edition. The content blows me away, and like Heiser says, I'll never read my Bible the same way again. Wouldn't recommend this book to most people, as sometimes I had to go back and re-read a passage, or got done with a footnote that was several paragraphs long and had to remember what the text was talking about before I got sidetracked by the footnote. But very glad I read it, very glad I own it. Also comes with a free digital download (though locked to their free app, Logos).
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Reviewed in the United States on March 8, 2026

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