Κώστας Φ.
Truth hurts. Here's a teddy bear.
- Μηνύματα
- 8.978
- Reaction score
- 894
Άλλο ένα review (ή μάλλον mini-review) απο το 6moons.
Υβριδικός τελικός, στα $10,900. Στα θετικά η ύπαρξη ρυθμιστικού για το gain.
Αντιγράφω απο 6moons:
"The LITD is a fully balanced, dual mono hybrid design with a valve input stage consisting of four E88C/6922 dual triodes and a solid-state output stage producing 80 watts into 8Ω and 115 watts into 4Ω. Valve life expectancy is 3000 hours. Damping factor into 8Ω is 250. The LITD weighs in at a healthy 20kg. The real estate towards the rear is taken up by the input valve stage which is protected by a removable wire cage.
This from Einstein Audio's designer: "Due to the sophisticated circuit design, we have an extremely good signal-to-noise ratio, better than 96dB. So the amplifier is really quiet, no hum or other noise will cover even the tiniest musical signal. Due to the dual mono design, channel separation is also very good, better than 80dB, which guarantees a very good focus and stable imaging. The output stage is a very unique transistor design, which uses only one type of transistor: N-channel FETs. We use two transistors per channel, N-channel MOSFETs.
"This is only possible because we use a true balanced design. It is very similar to our OTL (output transformer less) design, The Final Cut, not with tubes here but transistors. If you look at the circuit diagram of the output stage, it looks really very similar to our OTL design, a real circlcotron with transistors. Due to this design, all the transistors use the same data since they are all of the same type. Hence harmonic distortion at the output stage is not measurable. It really acts as a pure current amplifier. The only harmonic distortion we have is the harmonic distortion of the tube driver which is a typical triode design.
"The harmonic spectrum of our amplifier is absolutely similar to a triode amplifie, but distortion of course is much lower, less than 0.02%. So effectively, what makes the 'sound' are the four dual triodes in the driver/input stage (two for each channel) and the control comes from this special circlotron output stage.
"To make the amplifier fast without any phase problems, the amplifier has an ultra-wide bandwidth. The level adjustment knob on the back of the amp is of course not in the signal path and can be used to match our amp perfectly to any preamp."
...
Unusually and commendably, the LITD sports a centrally mounted attenuation knob which allows user control of gain for accurate mating to any preamplifier. Anyone suffering system noise by way of a high-gain preamplifier/amplifier and efficient speakers would testify to the merits of such a feature. This control's other purpose is to serve as a gain matching feature when bi-amping speakers or connecting to a subwoofer where the RCA inputs will act as outputs when using the balanced connections from the preamplifier.
...
The designers of the Light In The Dark hybrid power amplifier have managed to combine the inherent tonal beauty of valves with the control and dynamic expression of solid state to create a superlative amplification instrument. This Einstein is sheer genius. And it won't take an advanced degree to understand and appreciate its brains ..."
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