THE BigO AUDIO ARCHIVE These recordings are part of the BigO Audio Archive covering albums that circulate among collectors and music fans. Mod. Wright Instruments Evolution of MWI Tube Design. In July of 2. 01. Dan Wright visited Jack Elliano of Electraprint Audio, Master transformer winder. The intent of the visit was to learn to wind our own chokes for R D and custom work. In the process, Dan also learned many of the secrets involved in winding audio output transformers, which are the key to the magic of any tube amps sound While visiting Jack, Dan heard a 1. W, Single Ended SE EL3. Jack had been working on. The technology, dubbed Isolinear by Elliano, focused on the reduction of IMD Intermodulation Distortion as well as THD Total Harmonic Distortion. Jack found a way to design a circuit, in single ended mode, with the EL3. Pure Pentode with a specific transformer design. Dan was struck by how natural, dynamic and live the sound was, from the 1. W amp. Working alongside Jack, Dan wound a pair of these special design transformers so that he could build a 1. W EL3. 4 amp for himself. The results were stunning here, as they were at Jacks, and from this, the Ambrose line of tube amps from MWI was born. The Original AmbroseDebuted at Capital Audiofest in DC with rave reviews, in late August 2. Opez_G-VG_w/0.jpg' alt='Hugh Masekela Flac S' title='Hugh Masekela Flac S' />Retail Price 1. Power 1. 0W Pure Class A. Hugh Masekela Flac S' title='Hugh Masekela Flac S' />Tubes 1 EL3. AT7 per stereo amp. Inputs 1 Pair RCA. Outputs 1 Pair 5 way binding posts. Transformers Power and Audi Output Transformers Custom Electraprint transformers, wound for 6 ohm load. Finish and Build Mirror polished Stainless Steel top plate. Audience FLAC Title Many things I had in my career, but never the P. A. died Artist Helloween Venue Espao das Amricas, So Paulo, Brazil. F A L T E R K u lt u r s o m m er 1 2 n Madonna scheiden sich seit jeher die Geister. Ist sie eine A Feministin, eine Postfeministin. Der Pioneer N70A ist ein Netzwerkplayer, der bereits in der Basisversion hohe Ansprche befriedigt. Doch die getunte Version von Phonosophie toppt die Basisversion. SzMax.jpg' alt='Hugh Masekela Flac S' title='Hugh Masekela Flac S' />Oct. Rocky Mountain Audio Fest. My favorite show of the year I am looking forward to showing our new KWI 200 with our modified Sony. Precision machined and engraved, 1 thick solid AL billet top and bottom plates and edge trim. Highly figured Flamed Maple enclosure with dovetail joinery construction and hand rubbed oil finish. All point point internal construction with custom MWI capacitors and the best possible components. The desire for more power prompted the next concept build. The 8. 45 SET Single Ended Triode is capable of putting out as much as 3. W in Class A1.   3. W is enough power to drive a much broader range of speakers. While the 1. W Ambrose sounded beautiful, it required speakers of a higher efficiency. An inquiry to Jack Elliano again returned a transformer and circuit design with custom reactors and output transformers, capable of achieving this result, with the same Isolinear technology. It was decided that this would be a CNO Cost No Object Statement design NOS New Old Stock Westinghouse ceramic 8. Tektronix ceramic wire mounts with silver contacts, PSSS Partial Silver Stranded Secondary audio output transformers, MWI caps, and Skogrand Beethoven Ultra Reference internal wiring were chosen for the internal build. The enclosure was designed similarly to the original Ambrose, but with highly figured Instrument Grade Walnut enclosure, mirror polished stainless steel top plate and 1 thick AL billet top and bottom plates. Due to the size of the transformers and tubes, these were designed as mono blocks. Each enclosure was 1. W x 2. 4D x 6H, not counting tubes or transformers. Where the original Ambrose featured exposed transformers, the 8. DS included AL transformer covers two per mono block, finished in Oxblood Hue prismatic powder coat, for a deep and rich burgundy wine color. The sound of the 8. DS is spacious and deep, with an unworldly soundstage. We have never heard such a boundless soundstage and open presentation in our reference system. Operating at 1. 20. V plate voltage, the 8. SET, driven by 6. HV5 Compactron Beam Triode allowed for enormous voltage swing and unparalleled headroom. The 8. 45 DS offers the sweet midrange of a good SET amp with the power and dynamics of a high power amp. Ambrose 8. 45 DS Mono BlocksDebuted at Rocky Mountain Audio Fest in Denver with ecstatic reception in early Oct, 2. Retail Price 4. Power 3. W Pure Class A. Tubes 1 8. Direct Heated Triode and 1 6. HV5 Compactron Beam Triode per mono amp. Inputs 1 Pair RCA. Outputs 1 Pair 5 way binding posts. Transformers  Power, Audio Output Transformers, Chokes and Reactors. Custom Electraprint design, wound for 6 ohm load. Finish and Build Mirror polished Stainless Steel top plate. How To Build A Value Driver Tree. Precision machined and engraved, 1 thick solid AL billet top and bottom plates and edge trim. Highly figured Flamed Maple enclosure with dovetail joinery construction and hand rubbed oil finish. All point point internal construction with custom MWI capacitors and the best possible components. Oxblood Hue prismatic powder coat finished transformer covers. Photo courtesy of Part Time Audiophile. The evolution of these concept designs culminated in the Ambrose A3. We determined that 3. W was needed to drive a greater variety of loudspeakers, and the EL3. We knew that a single EL3. IMD and THD 1. 0W of VERY musical power. Further research with Jack Elliano proved that the same could be done with two EL3. W, but at the time, three tubes was problematic, leading to oscillation and instability. This initial research was done with Dan and Jack Elliano in July of 2. Early in 2. 01. 6, Jack called Dan to tell him that he found a way to stabilize the Trio of EL3. W Ambrose amplifier. Dan travelled to Vegas again to work with Jack and listen to the prototype. It was GOOD and Dan felt that a sweet spot had been found. It was a clean 3. W of power that did not require HUGE power transformers operating at 1. V and expensive 8. Dan requested a special pair of output transformers designed for a 3. W EL3. 4 Ambrose mono block pair, capable of EXCELLENT low AND high frequency response. This was a special design because transformer designs often require a compromise of bandwidth due to the physics involved in Single Ended output transformers. More core mass was added and the design was revised by Jack Elliano to deliver what we needed. The Ambrose A3. 0 Mono Blocks were born. The A3. 0s possessed the sparkle, dynamics and lively sound of the 1. W Ambrose AND enough power to drive a much greater variety of speakers. It was also much less costly to build than the Reference 8. DS mono blocks, making it more attainable for a greater customer base. Ambrose A3. 0 Mono BlocksDebuted at T. H. E. Show, Newport, CA, in early June 2. We knew we had hit the markRetail 1. Power 3. 0W Pure Class A. Tubes 3 EL3. 4 and 11. AT7 per mono amp. Inputs 1 Pair RCA. Outputs 1 Pair 5 way binding posts. All point point internal construction with custom MWI capacitors and the best possible components. Transformers  Power and Audio Output Transformers. Custom Electraprint, wound for 6 ohm load. Finish and Build 38 precision machined and engraved AL billet top and bottom plates. Highly figured Flamed Maple enclosure with dovetail joinery construction and hand rubbed oil finish. Oxblood Hue prismatic finish transformer covers. Photo courtesy of Positive Feedback Online. MWIs Tube Amp Journey. Mod. Wright has always designed tube source products and preamps, from digital to analog, but our amps have always been solid state. The reason for this is that Dan has never been satisfied with the sound of tube amps that he has heard. Having owned OTL, Push Pull and SET Single Ended Triode amplifiers, Dan has always been familiar with the strengths of each and also their weaknesses. Dan has always felt that tube amps, while beautiful sounding in many respects, tend to fall short in terms of speed, dynamics, resolution and frequency response. This is where SS amps have the edge.