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ALEF by Delta SigmaUltra High Performance State-of-the-Art from Italy!
State-of-the-Art Analog Amplifiers & Linestages The Delta Sigma electronics are simply the finest I have ever heard...period! The designer has created circuits that are flat & stable to 3Mhz and not requiring special cables. Crafted with ultra high construction quality using the finest quality components to insure the highest level of performance and a long, trouble-free life. Sonically, think the transparent purity of the finest OTL amplifiers but lightning fast with a greater top end extension, a more open sound, deeper & tighter bottom octaves, more effortlessly explosive dynamics and an amazing lifelike presentation of tonal qualities. The linestage and amplifiers both incorporate the 3Mhz circuits and the integrated uses modules from both to maintain the ultra wide bandwidth and lightning speed of the circuits. These are absolutely the most amazing electronics I have ever heard including mega priced $350k monoamp designs!
Simply...State-Of-The-Art!
"Duet SE" Dual-Mono amplifier + "Director" active Dual-Mono Linestage
Frequency Response based on "ALEF" 6Mhz circuit design Rise Time: 0.3µs Slew Rate: 180V/uSec
Remote Control with Ultra-Precise resistor-based attenuator featuring 64-steps
Extraordinary Power Supply for effortless dynamics!
Power Rating: Rated: 180w/ch RMS on 8 Ohms Real life: >360w/ch Max continuous power: 700w/ch Peak: >10 kw/ch
Delta Sigma's newest series!
- ALEF Duet-SE amplifier -
Based on the extraordinary & state-of-the-art DC-6Mhz design has earned the prestigious Haute Fidelite's very rare "Reference" award!
Rated “5 stars” (highest) on ALL sonic attributes!
Excerpts (translated) Dynamics: "The Alef communicates tremendous energy on transients. The magnitude when listening to the bass line gives a real sense of presence in the room. The chords are clear and precise, the rhythm is accurately articulated and one feels no bass volume exaggeration meaning the ALEF is sovereign and in control of the lowest octaves." "On drum keystrokes or on timbale impacts, we feel precisely and distinctly the emitted sound impulse of every attack followed by how each note ripples the drumskin. The dynamics of this amplifier is distributed on the audio spectrum in a very linear & balanced way with no part of the spectrum slighted or exaggerated. The Alef is incisive and powerful."
Soundstaging: "High level of precision of spatial soundstaging is a part of this Italian Dual-Mono stereo block. Although it has such extraordinary qualities of dynamics without restraints, one could not expect same high level of signal resolution and equally high level of soundstaging. It can virtually create a space of holographic illusion and the Alef creates a portrayal of live singing and melodic reproduction"
Tonality/Transparency: “This amplifier offers a very pure listening, very neutral listening experience due in part to the ultrawide bandwidth – on paper and also subjectively. Very powerful male voice & delicate female voice often suggest that of a triode - sometimes approaching the absolute very best with accurate voice without paralysis.”
Conclusion: "Wonderful exercise of style this amplifier Alef Duet SE (by Delta Sigma). Starting from a proprietary circuitry that can be tuned, if necessary to the need and wishes of each owner, the manufacturer propose a device capable to satisfy all situations, offering a clear, precise and defined reproduction from the extreme bass to the extreme high."
"The amplifier is able to play loud, very loud, without any audible sign of stress, or to distil a delicate melody at low volume, in class A. It can do almost everything, and does it well. The price is relatively high, but it benefits of custom, handmade manufacturing and of “sur mesure” concept - unique in the world."
Simply, the best sounding amplifier available… Highest level of technology Unsurpassed levels of transparency, dynamics & resolution Deeper & better controlled bass Extraordinary “Soul” that makes others sound soulless.
Nothing else compares!
Specs & Tech
Based on proprietary state-of-the-art DC-6Mhz design
● 180w/ch @ 8 ohms ● 600w/ch @ 0.1 ohm ● 10,000w/ch Impulse Power (for unrestrained dynamic peaks)
● Highly biased to Class-A ● Inputs: RCA & XLR (1 pr each) ● Totally stable into low impedance loads ● No special cables & settings required ● Substantial anti-vibration technology esp on power supply ● Available as Mono, 2-channel, 3-channel & Integrated
Power Supply & Technology ● (2) Transformers—each capable of massive 680 VA ● “Planted” in a thick quartz powder for noise shielding & vibration control ● “Drowned” in resin within a very expensive mu-metal shielded enclosure ● Entire transformer box is “floated & suspended” by several silent vibration blocks ● All magnetic radiation and mechanical vibrations are completely suppressed ● Litz ultrapure copper internal wire standard - silver optional ● Pure copper binding posts standard - silver optional
● Key components are hand shielded with a copper foil and grounded ● Printed circuit board tracings >4x thicker than currently available ● Very high power reserve is provided by many small fast capacitors wired in parallel and positioned as close as possible to active device
● 180w/ch @ 8 ohms ● Highly biased to Class-A ● Inputs: RCA & XLR (1 pr each) ● Totally stable into low impedance loads ● No special cables & settings required ● Substantial anti-vibration technology power supply & PCB ● Pure copper binding posts - 2 pair for easy bi-wiring
Delta Sigma "North Pole Special Edition" Integrated Amplifier (v2) Now available in v2 with further enhancements, parts upgrade including reference quality TKD potentiometer for even greater transparency & purity!
Delta Sigma "North Pole Special Edition" Integrated Amplifier (v2) "At my feet, the Italian integrated amplifier "North Pole-SE" from Delta Sigma. The listening session I could share with Romain on B&W Diamond Signature and ProAC D28, all linked with cable 47 Lab, have demonstrated the extraordinary capability in current of this integrated amplifier. These two loudspeakers have been literally transformed by the energy perfectly controlled, with a strong sense of detail and subtlety…” “These systems represent two approaches very closed to the unachievable sound perfection: the B&W Diamond Signature fed by the Delta Sigma "North Pole-SE" integrated amplifier are the perfection of actual highest technology.” - Revue du Son (Robert Lacrampe, Editor) "At the recent CES2009 show in Las Vegas I spent some time in your room and came away very impressed with the Delta Sigma integrated amplifier on display. I've heard the Manger speakers any number of times (over ten) and have never heard them sound as good as on that day. I've heard some good integrateds in the past, but that one may be the finest yet—superbly transparent sounding.” - Martin DeWulf - Editor "Bound for Sound"
Created with Delta Sigma's 3Mhz circuit, the sound is simply spectacular - transparently pure, ultra high resolution, unrestrained dynamics and a presentation that captures the true sound of a voice, piano or any musical instrument.
U2's Bono comments on DeltaSigma/Pagani HiFi system as "amazing sound and technology" at recent Monte Carlo Luxury Show.
Pagani Zonda The Pagani supercar (~ $1million) is considered by many in the know to be the world's finest automobile. Breathtakingly beautiful in its' carbon fibre body - pictures certainly do not do it justice. Pagani sells a very limited number of its' custom, hand built supercars each year for it's clients who want the absolute best. After Horacio Pagani heard the Delta Sigma audio system and wanting the absolute best sound system for his extraordinary automobile, he commissioned Delta Sigma to design the official sound system for the Pagani. The world's best sound system for the world's finest automobile. For those who simply prefer the absolute best.
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Latest Reviews:
"Wonderful exercise of style this amplifier Alef Duet SE (by Delta Sigma). Starting from a proprietary circuitry that can be tuned, if necessary to the need and wishes of each owner, the manufacturer propose a device capable to satisfy all situations, offering a clear, precise and defined reproduction from the extreme bass to the extreme high."
"The amplifier is able to play loud, very loud, without any audible sign of stress, or to distil a delicate melody at low volume, in class A. It can do almost everything, and does it well. The price is relatively high, but it benefits of custom, handmade manufacturing and of “sur mesure” concept - unique in the world." - Haute Fidelite (Feb,2010)
"At my feet, the Italian integrated amplifier "North Pole-SE" from Delta Sigma. The listening session I could share with Romain on B&W Diamond Signature and ProAC D28, all linked with cable 47 Lab, have demonstrated the extraordinary capability in current of this integrated amplifier. These two loudspeakers have been literally transformed by the energy perfectly controlled, with a strong sense of detail and subtlety…”
“These systems represent two approaches very closed to the unachievable sound perfection: the B&W Diamond Signature fed by the Delta Sigma "North Pole-SE" integrated amplifier are the perfection of actual highest technology.”
- Revue du Son (Robert Lacrampe, Editor) Dec,2009
"At the recent CES2009 show in Las Vegas I spent some time in your room and came away very impressed with the Delta Sigma "North Pole-SE" integrated amplifier on display. I've heard the Manger speakers any number of times (over ten) and have never heard them sound as good as on that day. I've heard some good integrateds in the past, but that one may be the finest yet—superbly transparent sounding.”
- Martin DeWulf (Editor - "Bound for Sound")
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ALEF
"Orchestra"
Integrated Amplifier
