Tosca Electronics

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Tosca - Electronics Products
Integrated amplifiers "+" integrated amplifiers Phono preamps
AT3 AT3 + PH3
AT5 AT5 +  
AT7 AT7 +  

AT3 +

AT3 +
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Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
  • Tosca electronics - AT3+
Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
  • Tosca electronics - AT3+ Signature
Presentation

The AT3+ is an integrated stereo amplifier, which exists in 2 quality levels : see the "Customisation" section.


Principle :

TheAT3+ is based on the highly optimised layout of the AT3, but is more powerful. In terms of technical characteristics, the main differences concern the power and output transformers, as well as the power tubes and a few other components.

Components :

  • Power tubes : 6V6
  • Input tubes : 6SL7 (after comparative listening, these tubes were selected for their harmonious blend).
  • Transformers and inductors custom made by a specialist familiar with our high level of standards.

Circuit :

  • Input stage is "pure triode" featuring the high quality 6SL7 tube with very low microphonic effect.
  • Output stage is a parallel single ended, pure Class A configuration.
  • The circuit is totally streamlined and for optimal signal transmission there are few components but they are all the finest available.
  • Localised feedback only concerns the output stage and therefore secondary effects are minimised.

Chassis :

  • The chassis is manufactured using thick aluminium plates which are closely assembled to ensure perfect stability.
  • All wiring is hand-wired point to point in our workshops.

Rear panel connectors :

  • 4 stereo line inputs (RCA rhodium)
  • Stereo output (WBT platinum)
  • Power switch On/Off/On with phase inverter

 

Customization

Customisation requests must be specified when ordering.

Updating the order at a later stage remains possible but includes extra shipping costs.

Choice of output impedance :

4 or 8 ohms

Line input connectors :

  • RCA gold (by default)
  • RCA silver

Output WBT NextGen gold

Output WBT NextGen silver

Signature version :

Featuring finest quality components :
  • Jensen capacitors
  • V-Cap capacitors
  • Silmic II tin decoupling capacitors
  • Tantal resistors
Sound reproduction is achieved with the most upmost delicacy, far beyond expectations. Smoothness, fullness of the sound message as well as speed and detail are significantly improved.

 

Specifications

Power :

  • Resistive load : 2 x 22W
  • Inductive load : 2 x 35W

Frequency range :

  • 15 Hz - 35 kHz

Impedance :

  • Input : 100 kOhms
  • Output : 8/4 Ohms

Input sensitivity :

  • 0.25 V

Power consumption :

  • 0.4 A / 230 V

Dimensions :

  • Width : 28 cm
  • Depth : 36 cm
  • Height : 19.5 cm / 17 cm (with / without grille)

Weight : 

  • 18 kg

 

System suggestion
Tosca speakers :
  • Ideal combination with the Aria Sat + Sub or the Aria 4.
  • It can be associated with the Aria 5 or the Recital 12, leaving you the possibility of upgrading to a more powerful amplifier at a larger stage.

Other brand speakers :

  • The AT3+ can easily drive a wide range of loudspeakers, which have the reputation of being difficult or low efficiency, such as the BBC LS3/5A.

Source:

  • A first level possibility is the NAD C525BEE Cd Player, which already allows full enjoyment of the AT3's quality performances.
  • In its improved "Tosca inside" version, however,the resulting sound quality proves to be a better match for the AT3's outstanding qualities.

Tosca cables:

  • Level 1000 for interconnexion (IC1000) and for loudspeakers (SP1000)