ATC Dual Suspension Tweeter

ATC's approach to tweeter design is unique in the marketplace. By incorporating a secondary suspension component the moving assembly is naturally constrained to travel only in the axial direction. The result is a design that suppresses rocking modes and ensures lower distortion levels. The additional stability that this approach provides over more conventional tweeter construction negates the need for ferro-fluid (usually required for cooling, damping, etc). As a consequence, the magnetic gap can be made smaller allowing ATC tweeters to not only perform optimally, for longer, but also offer improved power handling over conventional designs.

While this unique tweeter topology offers superior performance, the resultant increased moving mass and overall complexity must be offset and overcome by the perfect alignment of all components. Consequently manufacturing and assembly demands exceptional care and accuracy - a level of capability that ATC excels at.

The standard SH25-76 and its ultimate 'S' spec stablemate approach these engineering challenges in different but equally successful ways. The standard tweeter has a novel and lighter moving mass bracing component, while the 'S' spec driver has an exceptionally powerful motor assembly that, when combined with the optimally stiff and lightweight coil former, delivers vanishing low levels of odd harmonic distortion and a well controlled extended frequency response beyond the limit of human hearing.

The additional stability over other designs negates the use of ferro-fluid, so ATC tweeters perform at their best for longer, and the magnetic gap can be made smaller, further improving power handling.

Each tweeter motor assembly employs a magnetically annealed top plate and huge N48M Neodymium ring magnet, the geometry of which has been individually optimised using finite element analysis to ensure the best possible performance. Achieving an incredibly high flux density of over 2.0T in the magnetic gap, the magnet assembly of the SH25-76S is fully saturated and therefore free from the effects of flux modulation in the surrounding metalwork, lowering odd harmonic distortion to below -70dB across the operating band. The high levels of flux density in the gap combined with a short coil long gap configuration result in a linear and extended frequency response beyond 20kHz.

Millenium Triple Step-Up

The Delta Story

ATC SCM150 PSLT @ Hifi Mania

Thrax Libra

Dynamic Sounds Associates Phono III

$19000


Like the Phono II, it has three inputs, but now--with a fully balanced (differential) amplifier front end-- the phono cartridge can be connected either in the typical unbalanced mode (RCA), or fully balanced (XLR) for reduced interference and lower noise.

The Phono III includes a fully-integrated remote control. Cartridge loading is again selectable for either MC or MM cartridges, but can now be controlled by the remote as well as at the front panel. There is an internal memory that stores the load value for each input and when going back to that input the memory inserts the previous load value for that input.  (The memory is "non-volatile" and saves the values even when the power is off.)  Music lovers will be able to adjust the load parameters while in the comfort of their listening “sweet spot.”

A digital display shows the current load value and the loading steps are in 10 ohm (or 10pF) increments instead of the 25 ohm (or 25 pF) increments used on the Phono II. There are 256 available loading options for MC cartridges, and 128 for MM cartridges. This increases the ability to zero in on the ideal resistance or capacitance loading for the optimum sonic presentation. Also, one of the inputs allows the user to have a “custom” load if the adjustable loading is not sufficient.

In addition, the remote will adjust gain, select phase, choose mute or run, and allow the listener to dim or increase the brightness of the Phono III’s LED display lights.

The unit also includes four other equalization curves for older Lps, selectable from the front panel, as an alternative to the standard RIAA curve. These curves are designed for older Columbia and Decca/FFRR pressings that were done prior to adopting the RIAA standard. All five curves are managed by a plug-in module so that other curves can be readily incorporated if a customer has a specific requirement. (DSA will explore the creation of special custom modules addressing unique equalization curves for existing or potential owners of the Phono III).

The Phono III is of solid-state design and has the classic sound found in all products designed by Dr. Douglas Hurlburt of DSA- that is to say neutral, rich and exceedingly dynamic. However, challenged to improve upon the Phono II’s reference performance, Dr. Hurlburt has made some modifications to the overall amplifier architecture as well as replacing some of the critical components with new and only recently available tightly matched dual devices. There is an audible improvement in both the soundstage and the organic quality of the Phono III’s presentation, resulting in a highly seductive listening experience.

Writings about Avalon Acoustics PM2 from Lotus Hifi

Lotus Hifi

Avalon Acoustics Precision Monitor 2

Paltauf PRE-300 & HPM-300

For our most demanding customers we offer the opportunity to experience our hybrid technology in its most technically sophisticated form. The line preamplifier PRE-300 in a noble real wood cabinet combined with mono power amplifier HPM-300 in the noble combination of stainless steel, wood and granite (on request with  the phono preamplifier "Phono 300"), performs at the highest sound level.

The sound is even better than that of the HPI-300 due to the splitting of the housing into preamp and mono power amps minimizing the interference of radiation effects - a technique also applied in full amplifiers. In this way even the last bit of sound is brought to its full potential.

Be it large orchestras, atmospheric jazz clubs, open-air concerts or sophisticated  studio recordings, the Preamplifier PRE-300/ power amplifier HPM-300 combination emulates a nearly live concert experience.

Preamplifier PRE-300

Technical data:
Frequency response: 5 Hz to over 100,000 Hz (- 0.5 dB)
Remote control

Connections:
4x stereo high level inputs Chinch
1x Stereo high level input XLR balanced
1x Stereo high level outputs Chinch
1x Stereo high level outputs XLR balanced

Dimensions:
depth: 37 cm
width: 39 cm
height: 11 cm

Power amplifier HPM-300

Technical data:
280 watt/8 ohm, 450 watts/4 ohm
Frequency response: 5 Hz to over 100,000 Hz (- 1dB)

Connections:
1x high level input chinch
1x high level input XLR balanced
1x connection for loudspeaker

Dimensions:
depth: 35,5 cm
width: 46 cm
height: 21,7 cm
weight: 18 kg

Paltauf HPI-300

Granite, wood and stainless steel reflect the inner values of our top model.  The high output power of over 300 watts into 4 ohms, a further increase in the quality of the components and the vibration-reduced  housing guarantee this hybrid amplifier to function with the highest reliability.

Be it large orchestras, atmospheric jazz clubs, open-air concerts or sophisticated studio recordings, the HPI-300  emulates  a nearly live concert experience.

No matter which type of music this amplifier excels in producing a crystal clear fidelity sound.


Signal voltage amplification with tubes

Producing a natural, lively sound image due to high dynamic range with very low distortion.


Balanced output stage

With complementary lateral MOSFETs: broadband, high current capability, lowest distortion.


Active volume control

Constant high sound quality independent of volume setting (mechanical potentiometers change their technical characteristics according to slider settings).


Power supply

Elaborate power supply with voltage stabilizers for each amplifier stage - three stabilizers for the audio circuitry, separate independent power supply for the control functions. Individually adjustable power supply, specially designed for audio applications for the output stages.


Processing

High quality components, e.g. 1% and 0.1% precision resistors, highest quality film capacitors in the signal path, 105° electrolytic capacitors with high durability in the power supply, circuit boards with optimized conductor path.


Power supply

For output stage: Switching power supply for 1.2 KW


Technical data:

2 x 160 watts/8 ohms, 2 x 300 watts/4 ohms
Frequency response: 5 Hz to over 100,000 Hz (-1db)
Remote control


Connections:

4x Stereo high level inputs Cinch
1x Stereo high level input XLR balanced
1x mono subwoofer output
1x connectors for a pair of stereo speakers


Dimensions and weight:

depth: 48,5cm
width: 46 cm
height: 21 cm
weight: 18 kg

Adyton Air Ribbon Supertweeter

Properly done this supertweeter improves your soundstage and imagine and gives much more air into the soundstage and even improves mid- and low frequency definition.

It is important to ensure that the distance from the tweeter in your speaker will have exactly the same distance to your ear as this super tweeter. Even one mm is important! When that is done, try to find what polarity of the super tweeter that gives best summation of the both.

Next, try to super adjust the distance of the super tweeter to give best total sound. Normally it is expected that the super tweeter is 6-12mm behind the original tweeter due to phase shift at high frequency of the original tweeter in your speaker. Then you have to adjust correct crossover frequency of the super tweeter and also adapt the sensitivity.


Technical data:

Sensitivity 93dB/1w

Adjustable 6 steps each -1 dB

Frequency response 10k-100kHz -6dB

Adjustable from 17k-22kHz in 6 steps

Capasitor Mundorf silver/gold/oil

Solid core silverplated copper internal wiring

Suesskind Primal Scream Phono Stage

€38000

Reezoldini Odeon L3

Tobian SC1 Reference Preamplifier

The SC1…completely legal happiness drug.

Our new SC1 is a real five ★★★★★ transformer coupled Reference preamplifier. The SC1 is completely hand wired (point to point) and all components were newly developed especially for the SC1.

For example; the new line output transformer with over 350 henrys is unique on the market!

Very good audio line out transformers transmit up to 95% of the original power of a triode; in watts!

Transformer coupling advantages however depend on the quality of the line out transformer and of course on the choice of tubes, like the legendary Directly Heated Triode 300b or 801a which we install in SC1.

As transformers are the essential part in each device and depending on their quality final result depend, we at Tobian Soundsystems do not want to leave anything to chance, so we decided to manufacture transformers ourselves.

After many hours spend on research and development and numerous comparisons and tests, we decided to use the best core material "M-core and E-core super-Permalloy". The result is an unprecedented audio line out transformer with a very wide and flexible frequency response ranging from 10Hz to 30kHz square wave.

This low-distortion and ultra-musical line out output transformer is the ideal partner for our new SC1 and has helped us to bring to life this exceptional preamplifier.

Hand Made super Permalloy Line output Transformer



Technical Specifications:

Impedance 200 ohm (Standard)

300 ohm and 600 ohm (available)

Line Stage 300B or 801a your choice

Complete hand wired (point to point)

New Volume Control 48 Step

Tube Rectifier 274B

Weight 50 kg

Dimensions 480mm x 540mm x 280mm (WxDxH)

Hand made in Hergiswil Lake Lucerne, Switzerland

Lifetime warranty (less tubes)