SONY TA-AV850D

Commentary

AV amplifier equipped with DSP and Dolby Pro Logic.

Five amplifiers are used : front L/R, rear L/R and center.
To further enhance the sound localization characteristic of Dolby Pro-Logic Surround, the center channel is compatible with the dual center system and has two pairs of output jacks for connecting two speakers.

Using an equalizer that uses a digital signal processor (DSP), the front and rear center speakers are designed to be tone controlled independently. This allows individual equalization to be performed according to the purpose and size of each speaker.

A test tone generator is built in to make it easier to balance each speaker.

Uses Dolby Prologic for full digital signal processing.
In the TA-AV850D, in addition to the delay and noise reduction parts of the circuits that make up the Dolby Pro Logic, the steering logic (directional enhancement circuit) has been digitized to improve the sense of sound movement, localization and separation.

Equipped with digital and auto input balance, it detects the level error between L and R that is mixed into the audio signal during software production, and automatically adjusts to the optimum level at all times.

It supports 4 modes of normal / wide / phantom / 3 ch logic so that it can be used other than 5 channels.

In addition to the Dolby Pro Logic Surround, 9 surround modes are preset.
The preset surround settings are Hall 1, Hall 2, Opera, Church, Jazz Club, Disco, Stadium, Live Concert, Theater, and Dolby Surround.

All audio inputs can be processed by DSP or digital processing, and sound fields can be created according to your preference.
Bass/Mid (parametric type) / Treble method can be adjusted for equalization, and 9 levels of compression (compressor) and expansion (expander) can be adjusted for dynamics control.
The six main parameters (Room/Wall/Seat position/Effect level/Reverb time/Delay time) and three subparameters (Center level/Rear level/Input balance (when Auto input balance off)) can be adjusted by default.
With the TA-AV850D, you can freely create sound fields based on preset modes. You can store up to 10 modes of sound fields as user presets.

1-bit type A/D and D/A converters are used for the D/A converter and the A/D converter, respectively. Compared with conventional stepped Namikata converters, the D/A converter does not generate any distortion in principle and has good phase characteristics.
The D/A converter in particular employs a newly developed pulse D/A converter that converts digital data into dense and sparse waves with pulses close to the natural music waveform, thereby improving sound quality.

The pre-out output of the front channel is mounted.

Up to 8 characters can be displayed on the display by entering alphabets and symbols for the name of the connected device.

A programmable remote controller is included.
With this remote controller, remote control signals of AV devices other than Sony can be memorized for all keys.

Model Rating

Type	AV amplifier
<DSP Unit>
Equalizer	Number of bands : Bass/Mid (parametric) / Treble (front / rear / center independent) Frequency : 20 Hz to 18 kHz, 1/6 octave setting Level width : + / - 12 dB per band, 0.2 dB step Slope (Q) : 3 levels (Mid band only)
Dynamics	Compressor : 9 stages Expander : 9 Stages
Surround	Room Size : 20 levels Wall : 20 levels Seat position : 20 steps for both F-R and L-R (L-R fixed for live concerts / theaters) Effect level : 20 levels Reverb time : 20 levels Delay Time : 15.0 ms ~ 30.0 ms, 0.1 ms Step (Dolbeer in a round) Center level : 0 ~ -60, - ∞ dB, 1 dB step Rear level : 0 to -60, - ∞ dB, 1 dB step Auto Input Balance : Auto / Manual (Live Concert / Theater / Dolby Sa in a round)
<Converter Section>
A/D converter	High Density Linear Converter System Sampling frequency : 48 kHz
D/A converter	Pulse D/A converter (both front and rear) Sampling frequency : 32 kHz, 44.1 kHz, 48 kHz
<General>
Output (6 Ω)	EIAJ Front : 100W + 100W Rear : 50W + 50W Center : 100W Front at main input : 70W + 70W (20 hz ~ 20 khz, 0.08%)
Frequency characteristic	10 Hz to 20 kHz ± 1 dB (input other than Phono, equalizer / dynamics / surround OFF)
Harmonic distortion factor	0.03% or Less (1 kHz, 6 Ω, Front 80W + 80W, Rear / Center OFF)
Signal-to-noise ratio (A network Front)	Tuner, CD, Tape1/2, Video1-5, LD, TV : 92 dB Optical1/2, Coaxial : 98 dB
Pwer	100 VAC, 50Hz/60Hz
Power consumption	245W
External dimensions	Width 470x Height 150x Depth 405 mm Side Wood Removal : 430 mm
Weight	14.8kg
Attachment	Programmable Remote Controller RM-P850