AmpsandSound Bigger Ben Amplifier

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AmpsandSound Bigger Ben Amplifier

by AmpsandSound

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$2,800.00
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Product Code:
AMSO-BIGGERBEN
Label/Make:
AmpsandSound
Genre/Model:
Bigger Ben
Description:
Single Ended Stereo Tube Amplifier

Have a question about this product? Please email our audio advisor or call 1-877-929-8729 with any questions or concerns regarding your equipment purchase.

AmpsandSound Products Are Handmade In Small Batches and Go Through Extensive Quality Control

The draw of single-ended amplifiers has always been a level of engagement that other amplifiers often fail to deliver; well designed single-ended amplifiers are not only impressive in the midrange, but across all frequencies.

The Bigger Ben is designed to offer transparency, rich detail, and an incredibly low noise floor. Parts selection was crucial during the design process and each was chosen not for price, but for the level of synergy between parts. Rectification is solid state which permits cooler operation and reliable performance. The amp is configured for ultra-linear operation allowing greater power output and minimal use of feedback.

The amplifier features an extremely stiff power supply; significantly larger than needed for primary filtering. In the early days of tube amps, chokes were easier to come by than caps and more reliable. As such, large chokes were utilized for primary filtering. As capacitor production gained reliability and costs came down, cap filtering and smaller chokes became the norm. In a single-ended design, a regulated and extremely quiet power supply is very important. Using a large 5 Henry choke is expensive, but yields significant improvements in reduction of DC ripple.

The chosen output transformers are over-spec’d and the highest quality. Ampsandsound considers the output transformer as important as any other design choice. When buying any tube amplifier, the weight of the output transformer can be directly proportional to the quality of sound. In general, larger outputs have more massive cores which are less prone to saturation and have higher inductance.

Larger cores and greater inductance allow the transformer to carry a low-end signal with minimal distortion. These transformers are bench tested to perform down to 20hz and up to 20khz. Even if your speakers only go to 50hz like a classic LS3/5 two-way, having an amplifier able to drive that low is pivotal in recreating the whole soundstage.

Choice of Loudspeaker?

The Bigger Ben pairs well with most speakers 94db and above. However, Bigger Ben is so quiet it will perform beautifully with full-range or horn-loaded speakers of efficiency above 100db, 700 micro volts RMS noise at idle. Speakers that can go down cleanly to 30hz really bring out the very best of the amp. 20z-20khz -1db at full power. The Bigger Ben (depending on choice of output tubes) will output between 5-7 watts, but there’s a lot more in the tank than that when matched with appropriate loudspeakers.

Tubes:
The amp is compatible with all 6l6 family tubes, including the 6l6GC, KT66, KT77, KT88, KT90, and EL34s. The driver tube is a 6SL7.

From AmpsandSound:

Non-boutique approach
ampsandsound believes in the non-boutique approach to manufacturing. Resistors are 2% or better and over spec’d, Caps are made by industry leaders with 5% or better ratings, wiring is Teflon, and output transformers include large core to resist saturation and provide a minimum 20hz to 20khz on a bench. Ultra wide frequency response, rock steady RMS provides a non-fatiguing sound.

Minimal Deflection
All ampsandsound amplifiers are built on a thick plate of anodized aluminum which is 10”x14” and placed into a hard wood plinth/chassis made of solid ¾” thick Eastern Walnut. The plate is 1/8” thick and has nearly no deflection. We don’t outsource our work at ampsandsound. We have the depth of the chassis large enough to allow for full sized chokes to be used without cluttering the clean look up top.

Ample Power Supply
All ampsandsound amps employ an extremely stiff power supply. The power supply chosen exceeds specified capacitance and always includes robust choke filtering. We recognize the importance of reducing DC ripple in creating life-like sound stages.

High Quality Transformers
Output transformers are over spec’d and ultra high quality. We consider the output transformer as important as any other design choice. When buying any tube amp, the weight of output transformer can be directly proportional to the quality of sound. In general, larger outputs have larger cores which are less prone to saturation and have higher inductance. Larger cores and greater inductance allows the transformer to carry a low-end signal with minimal distortion. These transformers are bench tested to perform down to 20hz to up to 20khz. Even if your speakers only go to 50hz like a LS3/5a having an amp with can drive that low impedance signal is pivotal in creating the whole sound stage.

Wiring Detail
Internal wiring is done with silver plated Teflon and silver solder. All wiring is held down and tied neatly with obsessive detail. We prefer never to see a loose wire… always tied down with a service loop and always dressed with function dictating form.

Handmade Products
Our products are handmade. Parts selection matters deeply to us, sourcing the highest quality parts that can be found without getting distracted by esoteric or misleading specs. We have chosen parts with preference to domestic suppliers including our signature top plates, chassis, transformers, and PCBs.

Quality, not Quantity
We do not want to sell these in large quantity. We seek to build something worth passing down and demanding use. We believe each of our amps are statement pieces, each design choice was made with care. Our design esthetic was masculine and purposeful… nothing by accident.

Easily Upgradeable
We have specifically chosen to build based on the best practices of production. Switches, fuses, IEC sockets and binding posts are common and replaceable with off the shelf parts should a need ever arise. Tube Sockets are high temp ceramic, PCB is super thick with through hole construction, resistors, and capacitors are all over spec’d intended with long trouble free use.

Dramatically Smooth Sound
The sound is smooth, liquid without sacrificing detail. We recently demonstrated the final production version at a small listening party paired with our Cornscalas’ and everyone was awestruck with the size and depth of the sound-stage.

Semi-Custom Design
The Aluminum top-plates and hardwood chassis were made large enough to allow appropriate component layout with specific attention to grounding and signal wire location. We chose to use domestic hardwoods, Eastern walnut, Mahogany, and other exotics to provide the solid foundation to build excellent sound. Exotic hardwoods can be chosen at additional costs.

Special Attention to Grounding
Each amspandsound amp is built with attention to grounding schemes/ star grounding and use of common ground contributing to its ultra-low noise floor and wide bandwidth.

Tube Rolling
Tube Rolling is a great way of getting to know your amp as each tube has its own sonic signature. The reality is we are here to enjoy music… if rolling, try 1 type at a time… driver or power and allow several weeks to really hear the tube before changing it again. So often we chase a different sound, rather than a better sound. A great amp or speakers are meant to be transformative, so let the music play!

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