François Louis Spectruoso - Alto Sax Mouthpiece - Sphere Chamber

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The tag on the side of the box states 'The saxophone mouthpiece that gives you maximum control on the tone colours with an enormous dynamic range'. Having just tried both T280 and T285 pieces I have to say that I entirely agree! This mouthpiece is really an absolute joy to play. The overall mood is a dark one, and I found that I wasn't able to produce a jarring note, no matter how hard I tried! - however, the projection capabilities are still enormous. One of the qualities we look for in a dark sounding tenor mouthpiece is a nice full sounding lower range with an easily accessible sub-tone - this is the case in abundance with the Spectruoso, very satisfying indeed! There is also good scope for a clean and well articulated upper range. The sound in general is woody and fruity and I feel that it's the type of mouthpiece that you could really develop a quality personal tone on. 

'A great new composite material.... inspired by finding a modern material that resonates like wood, with absolute consistency and more focus. A new design with beautifully mixed polished and sanded (matte) surfaces, with an inwards curve at the junction between the beak and the body of the mouthpiece and at the junction between shank and body.'

This is a beautifully balanced sounding mouthpiece, and it feels like they have captured some of the qualities of the vintage mouthpieces of the past, such as the New York Meyer. The idea of the Sphere chamber is to give good presence to the middle range frequencies. In my opinion it achieves this very nicely, creating a buoyant, floaty kind of tone - the sound takes you in a Cannonball Adderley kind-of direction, with a definite leaning towards straight ahead or bebop jazz styles. In my opinion, it can also create enough edge to push the sound in more of a Kenny Garret direction! All in all, a great scope of tonal colour available!

PLEASE NOTE: Supplied without ligature- for use with alto hard rubber sized ligatures

If the mouthpiece is not in stock there will be a 3 week delay on the item 

Tip Openings:

A185 is a 1.85 mm tip opening (72/00") equivalent to the traditional "5"/"5*" opening.

Combined with a medium short facing length and a progressive facing curve. Very stable with enough flexibility to vary sound colors, fast response.

Best fit with 2 1/2 to 3 1/2 reeds, Jazz cut as well as Classical cut.


A205 is a 2.05 mm tip opening (80/00") equivalent to the traditional "6" opening.

Combined with a short facing length and a progressive facing curve. This is the "universal" mouthpiece: very stable, centred pitch, small enough to be playable by amateurs and students, big enough to put some air and be playable by professionals. Very precise. Extremely responsive and fast staccato with a lot of projection. Best fit with 2 1/2 to 4 reeds, Jazz or Classical cut.

A225 is a 2.25 mm tip opening (88/00") equivalent to the traditional "7" opening.

Combined with a medium facing length and a progressive facing curve. Great flexibility combined with stability and a well-centred pitch.

Best fit with 1 1/2 to 5, Jazz or Classical cut.

A235 is a 2.35 mm tip opening (92/00") equivalent to the traditional "7*" opening.

Combined with a medium long facing length and a soft facing curve. Due to the longer facing curve, it brings more resistance and takes more air. (This make it feel "bigger") The soft curve gives it a lot of flexibility. This is the best mouthpiece for the professional players that need to use all possibilities of dynamics, sound colors and range in one mouthpiece, without having to struggle too hard on a real big mouthpiece.

Best fit with 2 1/2 to 4 reeds. Even if the Classical cut will play good, the « Jazz cut » will be a better fit with this type of facing.

A255 is a 2.55 mm tip opening (100/00") equivalent to the traditional "8*" opening.

Combined with a long facing length and a progressive facing curve. Very well balanced and efficient, due to the progressive curve it keeps a well-centred pitch with flexibility, lot of projection and a big low range. For the player who likes to blow a lot of air without loosing control.

Best fit with 2 to 4 reeds. Better fit with « Jazz Cut »

A285 is a 2.85 mm tip opening (112/00") equivalent to the traditional "9*" opening.

Combined with a long facing length and a smooth progressive facing curve. Perfect mix of resistance and flexibility, very demanding, for players who are prepared to work hard and get rewarded by a full, rich and big sound, without loosing response and center.

Best fit with 2 to 5 reeds. Better fit with « Jazz Cut »

A325 is a 3.25 mm tip opening (128/00") equivalent to the traditional "11*" opening.

Combined with a long facing length and a progressive facing curve. Enormous sound, flexibility, projection, very big and full low range. For the players who need a total freedom of expression and are prepared to put a lot of air, having developed a good control of the embouchure/air stream balance. This has been specially conceived for Tenor players used to “big mouthpieces” who can hardly find a big enough mouthpiece while they have to double on the Alto Saxophone.

Best fit: at this stage, you know about your reeds!



Whether on Tenor, Alto or Soprano saxophones, playing on my François Louis mouthpiece’s and Ligature’s give me the confidence to execute my ideas throughout my horns with my own personal sound in what ever ensemble setting I find myself in...

The quality and craftsmanship in his work is incomparable in todays market place...

François’ passion and developments are a constant is his new Soprano "Spectruoso" mouthpiece.

Joe Lovano 

The François Louis “Spectruoso” Mouthpiece has a real soul and sound. François has made something that is easy to play in all registers and is flexible and full bodied. It meets today’s demands for projection without sacrificing quality of sound.

Jerry Bergonzi 

Playing Francois Louis mouthpieces and ligatures on alto and soprano saxophones has given me the complete overall sound and depth that I’ve spent many years searching for on other mouthpieces.

It’s given me the freedom to produce my true voice and to speak like an individual. Truly personal, truly world class.

Tony Kofi

In the last more or less 20 years I’m using all kinds of Francois Louis Mouthpieces in different recordings and Live concert’s. Started on The Solid Silver, then the famous Wooden for years and this days the “Spectruos” . All of them have different character of course, but one thing never changes… they all ‘singing like a singer… wich effect is very importand for my way of playing, I’m a melody guy. Perfect mouthpiece to play lot’s of dynamic and stil stay’s in Tune,besides the Incredible reaction of phrasing.

Honestly… Ive been trying to replace the F.L. ligature few times, but everytime decided to come back because simply sounding the best. Gives the reed so much freedom to vibrate like no other ligature.

François is a real sound designer for the modern saxophone.

Tony Lakatos

Saxophone Setup

All of our instruments are fully checked and set-up by our experienced technicians. Regardless of size or price - all saxophones go through the same process.   Here at we know that when you buy a sax, our pro set up is absolutley essential to ensure the instrument you're purchasing is playing to it's optimum peformance. 

In addition, all new saxophones purchased from us can be returned within a year for a FREE checkover to make sure your saxophone continues to perform its best. 

Our 12-Step Checkover:

• All transit packing and corks from the manufacturer are removed.
• Thorough visual check for any imperfections in the finish, includes unlacquered saxophones.
• All pads checked for quality.
• All pad seatings checked using leak lights and traditional feeler paper methods.
• Regulation checked and adjusted.
• All key corks and felts checked, adjusted to set vent heights.
• All spring tensions checked and adjusted to create an even feel across the instrument.
• Neck fitting checked.
• Crook cork checked for cork quality and provided mouthpiece fits.
• Thorough play-test from top to bottom, including alternate fingerings.
• Case inspected for quality, instrument fit and accessories.
• Instrument cleaned and carefully repacked.

Delivery & Returns



If you're based overseas and would like more information, please read our overseas guide located here


Orders in stock and received before 2pm are normally shipped the same day. International orders are generally received in under 7 days.


Goods purchased online from can be returned within 14 days of receipt. This does not apply to custom ordered goods, products where hygiene is concerned and product seals have been broken (reeds, mouthpieces etc), digital download codes or software licences. Goods purchased through our website cannot be returned to our retail stores.