AmpsandSound LeeLoo Headphone Amplifier
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- Headphone Amplifier
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AmpsandSound Products Are Handmade In Small Batches and Go Through Extensive Quality Control
The Leeloo was cheeckily named after the main character in the movie The 5th Element… Love! Leeloo is a unique amplifier combining headphone amp and stereo with dedicated taps for each and a volume control to provide easy integration with any source. Leeloo is the best of single-ended bliss, ultra linear power and mild feedback for improved frequency extension and noise floor. Paring a single 12ax7 in the preamp section with a pair of EL84s, the SE-84 doesn’t require an external preamp and can be driven to full output with an iPod or smartphone. Coupling caps are high grade Wima, we use 2% resistors, and our usual robust power supply including massive choke regulation to drive the D/C ripple and noise floor to the lowest levels we every seen. The SE-84 driven by an iPod makes a fantastic combo for a 2nd system or smaller room. 2.6 watts may not seem enough, but the bass presence and sound stage will make a convert of you. Perhaps the most astonishing feature of Leeloo is the 1watt into 32ohm loads able to drive even the most demanding headphones with ease.
The SE-84 is small in physical size (12”x 10”) and built into a gorgeous Solid Eastern Walnut Cab with ebony corners. The finish is hand rubbed lacquer. The SE-84 will be at home in your rack or as a statement piece in your office.
Each amspandsound amp is built with attention to grounding schemes – star grounding and use of common ground contributing to its very low noise floor and wide bandwidth. Leeloo pairs well with most speakers 89db and above, but like all our amplifiers it is quiet enough to use with full-range or horn-loaded speakers having 100db efficiency and above. Speakers that can go cleanly down to 30hz really bring out the very best of the amp.
Leeloo is handmade with pride in Southern California with US-sourced parts, including our precision transformers.
Size W/H/D: 18x13x10
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.
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.
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.
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.
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.
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 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!
Custom wound ultra-high quality US sourced transformers 32ohm ¼” Jack and 8ohm speaker tap.
Wired in Ultra liner operation for triode like sound while providing Pentode based power.
Utilizes ALPS volume pot, Massive Choke filtered power supply, Custom walnut chassis with ebony corners and hand rubbed finish.
Easy to drive input, perfect for use with an iPhone or DAP.
Input tube: 12AX7 or equivalent
Output tubes: 2X EL-84s
Cathode Bias/automatic bias allows for easy tube changes without adjustment.
Compatible with 32ohm-300ohm headphones using the “32ohm” 1/4″ jack.
Input Sensitivity 700mV peek for full power out.
32ohm power: 1watt RMS @ 1khz, 5.8VRMS
Frequency bandwidth 20hz -1db to 20khz -3db full power
Noise on 32ohm tap @ 632uV
8ohm power: 2.6watts RMS @ 1khz, 4.6VRMS
Frequency bandwidth 38hzhz -1db to 18khz -3db full power
Noise on 32ohm tap @ 490uV
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