300B EVO

Reference Grade Integrated Amplifier

Debut 2022 Summer

How do you start to write up a technical description of a high-end tube amp whose design is unlike most others? We just want to keep it short, so we’re just going to start by saying this amplifier is the product of our 30 years+ of ongoing (modern hi-fi integrated circuit) research and tuning around the 300B tube. From the custom-tailored / high quality power transformer , power supply design and high-quality choke transformer, this is easily one of the quietest 300B amplifiers on the market. Special attention is paid to the pre-amplifier stages, and our design shows off the 12AX7 tubes – a pair of high quality ones will take it to an even higher level! The output transformers on any tube amps is crucial, much like the transmission on a race car – the better it is, the more output to the wheels – and the output transformers we use are NOT just good, but, rather, exceptional, in getting the most out of this 300B tube. Both nice extended highs and a quiet soundscape are guaranteed, while delivering a solid 8 watts Class A power, before measurements show any signal distortion.

More importantly - we uses the original Western Electric 300B tube specs to engineer this amplifier AND we voiced the 300B EVO with the Western Electric 300B too!

We are a Western Electric dealer too - ask us if you want WE-300B tubes to come with your EVO.

Official Features for thew new 300B EVO Integrated Amplifier

• HASHIMOTO Japan’s 20W Classic Output Transformers

• HASHIMOTO Japan’s Classic Choke Transformer

• HASHIMOTO Japan’s 300B Proprietary Power Transformer , design by Finale Audio and produced by Hashimoto.

• CMC Gold Binding Posts 0-4-8 Ohms (Can be upgrade to other binding posts or other ohms)

• ELMA Swiss Made Selector (New for 2022)

• ALPS Japan Volume

• Mundorf Silver Oil Caps or Jensen Copper Oil Caps (Choice)

• Finale Audio Pink-Lingu Rose-Gold Plated RCAs (2 Pairs)

• FURUTECH Japan’s Gold AC Inlet

• $9,500 USD

• Specs is same as or better to the EVO-21 on the bottom of this page

• F-300B EVO review by Wall of Sound

https://wallofsound.ca/audioreviews/amplification/review-the-finale-audio-f-300b-evo-amplifier/

DO YOU KNOW:

Output transformers are a very important part of tube amplifiers, especially in single-ended design.  Different output transformers portray music differently — they are like the transmissions in cars. Even if you have an engine that has thousands of horsepower, if you do not have a good transmission (transformer), you are not going to get the engine’s maximum power potential. On the other hand, if you have a better transmission, you always get more power to the wheels (same as tube amps), AND the car will drive better, pulls stronger and more quietly too. 

Real HiFi grade transformers are expensive because they are hard to engineer and master. I have had a business winding high-quality transformers, and understand how tricky this can be.  Because of this, a good transformer comes with a high price tag (especially those made by established audio transformer manufacturers). This is why experienced tube audiophiles will pay hundreds and thousands of dollars to get good transformers. The choice of transformers can make a dramatic difference in final sound, even with the the same circuitry.

300B EVO R

Debut 2023 Summer

Further Upgraded :

• 20W Potted HIFI Output Transformers by HASHIMOTO Japan

• Power raised to 9W Max (Thanks to the higher end / better output transformers / less insert-loss character)

• FFX Power Tune - Due to new better output transformers , circuits re-calibration is required to unleash the output transformers.

• Large Potted HIFI Output Transformers by HASHIMOTO Japan

• FFX Grounding Design for maximizing noise control for better S/N Ratio measurement, which means even quieter background

• FURUTECH Japan Premium Insulated Speaker Binding Posts

• FINALE “Pink-Lingu” 3 Sets of Inputs (Optional 2 Sets)

• MSRP $14,000 USD

• OPTIONAL Western Electric 300B Tubes / Pair - $1,950 CAD (including 5 years warranty)

Finalé 300B EVO-21 (Discontinued)

2019-2022 - COVID Period

 SPECS

• Rated Output: 8W + 8 W (Varies on brand of 300B tube used, type of rectifier tube used)

• Operation: Class A Single Ended Triode Auto bias

• Speaker Outputs: 4 / 8 ohm (16 Optional)

• Total Harmonic Distortion: Less than 1% at Rated Output (Varies on different brand/model of transformers)

• Hum & Noise (A-Weight): 88 db or better at rated output

• Frequency Response: + 0 - 2 db (At 1 Watt Reference Power Output from 20-20,000 hz)

• Input Sensitivity and Impedance: Main Input - 500 mv / 100k ohm

• Footprint: 13.5" Wide x 18" Deep

• Shipping weight : 35+ lbs

• Pre-amp Tubes: 12AX7 / ECC83 / 5751 Pair (12AT7 could be substitute as well when 12AX7 is not available , but not as quiet)

• Driver Tubes : 6N6 / 6DT8 / 6FQ7 / 6CG7 Pair (They all offer a different good flavor) - or even the 6H30 “Super Triode” - we thought of making a fancy , space-age, rocket science name for this decoded driver stage, but we decide not to follow suit with others in marketing exaggerating.

• Power Tubes: 300-B Matched Pair

• Rectifier Tube: We voiced and recommended the NOS 5T4. Substitute : 5U4 (full rated power) or 5V4 (soft start up rectifier tube , less output power but a more transparent / musical tube - those who wants a more transparent / tube sound/). Any other rectifiers is prohibited.

• MSRP : $7,500 USD Starting (Pre-COVID Price)

• New chassis became top plate over chassis design - and the top plate can be painted into any of our 9 official colours free of charge. There are also 6,500 Other Colours here for extra : $500 CAD / Car Paints $800 (Longer lead time required , as often the top clear-coat is not harden , and there will always be imperfect with car paint as it is done by hand). Or for best result (to some people), the top plate can be fabricated with pure copper for a extra $2,500 CAD.