About the brand

At 30 years of age in 1979 the designer of Leben amps, Mr. Hyodo left Luxman and established his own “Kouri Denki Co.” At the time he was manufacturing electronic components and parts, and designing amplifiers mainly for private projects; Cafe bars, restaurants, etc…
The first commercial based product “TRIODE 33″(under “KFH” brand) was released in 1991 with very premium and rare tube 3C33, and later a first model under “Leben” brand was a power amplifier RS-35a (with 6L6GC) released in 1995.

His amplifiers are known as a product of passion, with very few models in production. Made by hand in Japan in small quantities ,and using select components with a self biasing circuit, these lovely jewels have developed a loyal following worldwide. Inviting musicality, warm, balanced…simply and beautifully crafted.

Absolutely amazing, gratifying, and rewarding.  Rather than list its virtues – we’d be here all day – I’ll just say that every time I listen to it I feel it would be absolutely impossible to improve on it.

Detailed information on individual models and technical data are best found directly with the manufacturer. We invite you to connect with them here. We urge you to request specific demonstration or discussion with CDF directly for all of your questions.


  • Pre Amplifier:
  • Leben RS-28CX Pre-amp with Phono
  • Integrated Amplifier:
  • Leben CS300F
  • Leben CS300XS
  • Leben CS600
  • Power Amplifier:
  • Leben CS-1000


  • Phono Stage:
  • Leben RS30EQ

Customer Reviews

> Write Your Own Review

Total freakin’ magic

… What I can talk about is how profound the emotional experience I have is with the Leben. It triggers simultaneously a unique combination of feeling and creativity. Through the music, the Leben asks me into the space it creates and invites me to co-create with it. It is such a deeply moving experience that… Read more >

Exceptional Customer Service

Hi Graeme , I wanted to thank you for the exceptional quality customer service as well as the hospitality of your store. I find that whether you buy a 20$ adapter, a pair of headphones for 400$ or a set of speakers for 20000$ every customer are treated equally and…

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Repeat customer

Dear Graeme, I just wanted to thank you for the wonderful experience at CDFaudio. You definately have a repeat customer here! I went back home to listen to the same piece I heard on the Shindo setup and I get it! What I previously thought was warm and inviting was…

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What a sound! Pure Bordeaux.

I have received speakers just one hour ago, and already had a chance to connect them. What a sound! Pure Bordeaux. I truly appreciate your time, expertise and enthusiasm assisting me to make a life-time purchase. I wish you sincerely a wonderful Holiday Season. Best wishes,

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Thanks for everything – including the scotch

Hi Jennifer It was great seeing and speaking with you at Salon Son et Image and thanks a lot for your invite. Everything was fantastic: the scotch, appetizers, and the most important  - great people! Many thanks for the great time! Oles  

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Hospitality and generosity

I wanted to take a second to thank you and everyone at the shop for your hospitality and generosity yesterday during the digital demonstration. The spread you laid out went above and beyond what was necessary or expected. The champagne and orange juice took it one step beyond. A nice way to…

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