The original AMP-11R was the product that helped define and introduce the Bakoon brand to the world of audiophiles. Decades of experience and excellence in audio amplifier design engineered into an award-winning compact amplifier – surpassing reviewers’ and owners’ expectations of what was possible to achieve in performance and true musical joy from such a small footprint.

Until now.

Since then, we have further evolved our core technology, the SATRI Circuit, beyond even our own expectations and launched our flagship amplifier, AMP-51R. And from that we trickled down our improvements to its smaller brother, the AMP-41. But, for those who remember and still enjoy our compact amplifiers, the anticipation has been very high for a new generation of our 1 Series. And that’s where our new AMP-13R comes in now.

The success of the previous AMP-11R, and its successor AMP-12R, was not only built on its compact size and sound, but also our own fascination with minimalism in physical and circuitry design. Simply put, we believe in minimalism and we strive to make complex things simpler, that still can deliver the highest possible performance. 

However, the technologies we’ve recently developed were meant for our bigger amplifiers, thus, to work in a compact amplifier of the 1 Series small foot print, we had to achieve much higher efficiency in smaller sizes. Our days of innovation weren’t over. And we ended up with a completely new technology that will even trickle up to our bigger amplifiers.

The case design itself continues to be a proof of our belief in minimization and minimalism. The AMP-13R is most likely the slimmest analogue audio amplifier ever developed with this performance. Not only is this patent-pending design slim, nothing is wasted anywhere to make such a complete design that nonetheless achieves the highest possible sound quality and optimal performance. We have concentrated our mechanical engineering ideas and manufacturing capabilities, with the best possible modern day high tech tools, to create the AMP-13R. And it shows just how far we can go.

The AMP-13R sums up Bakoon’s mastery in every possible way to build a world class compact audio amplifier.

Feature Highlights


With our breakthrough in bias circuit design, we’ve outdone ourselves. The patent-pending JET Bias circuit has brought the SATRI Circuit to a whole new level in terms of electrical performance and sound quality. Our circuit is now reborn and renamed as the JET SATRI Circuit, an ultra fast, wide bandwidth, full discrete design with zero negative feedback. It is also our first circuit that doesn’t even use output emitter resistors, resulting lower output impedance than ever before, with direct, ultra fast response to the loudspeakers.

JET Bias Circuit

JET is actually an abbreviation of “Jet”, “Exact” and “Thermal Tracking”. It’s ultra-fast like a jet plane in terms of circuit response time and speed. The bias current is exactly fixed and it doesn’t drift at any condition. It’s not affected by temperature variations as the temperature sensor tracks and adjusts the bias in milliseconds, or instantly. This patent-pending innovation is enabled by a separate ADC, DAC and microprocessor (MPU) circuit stage with highly sophisticated, yet elegant software. 

“Enlightenment” in Design

We believe in simplicity in design and has worked ourselves in decades to achieve class leading design and engineering. The front panel measures merely 27.5mm, most likely the slimmest analogue audio amplifier design ever created, and it is now patent-pending to achieve such a slim profile. The design is also efficient in heat transfer to achieve almost double the output power compared to our previous generation amplifiers. The extreme calculations in mechanical engineering and tightest machining tolerance delivers one elegant design. We first implemented beautiful red Urushi lacquered knob, made by master craftsmen from Fukushima, Japan.

Ultimate Headphone Amplifier

The best possible headphone playback has been our one ambitious requirement to fulfill since the beginning of our company. With the recent releases of our world class headphone amplifiers, we have gathered valuable experience and ideas to make even this a class above what can be expected from our AMP-13R amplifier. The JET SATRI Circuit allow a zero loss amplification factor change, which means one can fully enjoy the EXICON MOSFETs excellent sound quality, direct to the headphone. The AMP-13R also provides the highest output power we have ever designed and will drive any headphone available in the market with a breeze.

Sophisticated Control and Power

The new AMP-13R boasts three separate control microprocessors (MPU) to provide unparalleled efficiency in its design. By separating these MPUs, we have actually reduced the number of parts and signal complexities, yet still provide the same level of highly successful user interfaces of the bigger AMP-51R and AMP-41. Furthermore, given the small footprint and height, we had the highest demands on the actual transformer design, and Avel Lindberg of Connecticut, USA was able to meet our custom specifications. The new power supply circuit is also of a very innovative design as it provides the auto-sense voltage switching capability of our AMP-51R and AMP-41, but this time, with only one power transformer, unlike our past circuits, which required additional power transformer. It all meets our ultimate goal of creating the world’s best compact amplifier.


● Power Output : 25 watts (8 Ω, 1 kHz)

● Gain : 22.5 dB max. (speaker, headphone high) or 7 dB max. (headphone low)

● Gain Control : MPU Controlled 50 Stepped Attenuator

● Frequency Response : 10 Hz ~ 500 kHz

● Input : 1 SATRI-LINK (BNC), 2 Voltage (RCA)

● Input Impedance : 3.68 Ω (SATRI-LINK), 10 kΩ (Voltage)

● User Interface : Encoder with a built in switch, Remote Controller

● Power Consumption : 100 watts max.

● Dimensions : 230 mm (W) x 230 mm (D) x 55 mm (H)

● Weight : 4 kg (net), 5 kg (shipping)