Sony DTC-A6 Specifications, SBM Super Bit Mapping Function, 20EN, Additional Information, System

Additional Information

Specifications

System

Tape	Digital audio tape
Recording head	Rotary head
Recording time	Standard: 120 minutes
(when using DT-120)	Long-play: 240 minutes
Tape speed	Standard: 8.15 mm/s
	Long-play: 4.075 mm/s
Drum rotation	Standard: 2,000 rpm
	Long-play: 1,000 rpm
Track pitch	13.6 µm (20.4 µm)
Sampling frequency	48 kHz, 44.1 kHz, 32 kHz
Number of channels	2 channels, stereo
D/A conversion	Standard: 16-bit linear
(quantization)	Long-play: 12-bit non-linear
Frequency response*	Standard: 2 - 22,000 Hz (±0.5 dB)
	Long-play: 2 - 14,500 Hz (±0.5 dB)
Signal-to-noise ratio*	90 dB or more (Standard and long-play
	mode)
Dynamic range*	90 dB or more (Standard and long-play
	mode)
Total harmonic	Standard: 0.005% or less (1 kHz)
distortion*	Long-play: 0.008% or less (1 kHz)
Wow and flutter	Below measurable limit (±0.001%
	W.PEAK)

* During analog input with the SBM function off.

Input Connectors

Connector	Jack type	Input impedance	Rated input level
ANALOG	Phono jacks	47 kilohms	–4 dBs
(LINE)
DIGITAL	Optical	—	—
OPTICAL	connector
DIGITAL	Phono jack	75 ohms	0.5 Vp-p
COAXIAL

Output Connectors

Connector	Jack type	Output	Rated	Load
		impedance	output	impedance
			level
ANALOG	Phono	470 ohms	–4 dBs	10 kilohms
(LINE)	jacks			or more
DIGITAL	Optical	—	(wavelength	—
OPTICAL	connector		660nm)
DIGITAL	Phono	75 Ω	0.5 Vp.p	75 Ω
COAXIAL	jack
HEADPHONES	Stereo	100 ohms	1.2 mW	32 ohms
	phone-plug
	jack

20EN

General section

Power requirements

Where purchased	Power requirements
U.S.A./Canada	120 V AC, 60 Hz
Europe	220 - 230 V AC, 50/60 Hz
Power consumption	30 W
Dimensions	Approx 430 × 122 × 325 mm (w/h/d)
	(17 × 4 7/8 × 12 7/8 inches)
Weight	Approx 5.0 kg (11 lb 0.4 oz)

Remote commander RM-D9 (supplied)

Dimensions	Approx 45 ×	185 × 20 mm (w/h/d)
	(113/16 × 7 3/8	× 13/16 inches)
Weight	Approx 100 g (3.5 oz) incl. batteries

Supplied accessories See page 4.

Design and specifications are subject to change without notice.

SBM (Super Bit Mapping) Function

During analog recording, the SBM function lowers noise within the frequency band to which to the human ear is most receptive to noise, thereby, sharply expanding the auditory dynamic range of the recorded signal.

High-precision pulse A/D converter

The deck uses a pulse AD converter and decimation filter to convert an analog signal into a quantized 24-bit digital signal. The deck, like CD players, uses 16-bit quantization, and thus the 8-bit difference results in more precise quantization, more signal information and less quantizing noise than 16-bit quantization. During conversion of the 24-bit data to a 16-bit recording signal, the SBM function boosts sound quality by reintegrating 4 bits of signal information that would normally be lost into the 16-bit signal.

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