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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





LECTOR CDP 7T

CDP 7T mk3The external power supply PSU-3T allowes for digital and analogical sections to be switched indipendently. Electrical and Electronic components are high grade type: polypropilene capacitors, OFC cables, high precision resistors and single stage power supply. Digital to Analogue convertion has been implemented by a dual mono DAC, one per channel.
When the perfect mechanical solution join original electronic design born a superior cd player class A product.
Several original mechanical solution are adopted as proprietary (internal Lector factory made) read out laser mechanism and special made brass pillar suspension
Separate power supply with indipendent section mains AC power switch ON/OFF (digital/analog) three power toroidal hi-flux transformers
Exclusive CD disc clamp with two axis stabilization effect by special neodinium magnet Sophisticated selection off DAC type dual mono PCM-1704 BB 24 bit with indipendent board pcb for real jitter reduction NO any type of feedback total or local circuity can control the analog stage, a original circuit design drive and control the gain of the first tube stage ( chatode direct drive coupling )
Passive dithering circuit increase real bit resolution near to the barrier of 24 bit ( Lector invented this original circuit design) Custom made CD mechanism with three isolated plate stages and vibration system discharge control spindle Original proprietary servo digital board with new technology solution design ( we don't use the kit electronic board ) The circuity of power supply employ 14 regulation stages , only one capacitor on signal path as film & foil custom made, special material chassis by aerospace alluminium die-cast.
The output tube triode circuity is in class A with only one passive first order filter
so do not have indesiderate rotative signal phase.
The CD mechanism have two different solution of mechanical damping:
-the first by special damping rubber in neoprene
-the second by lattice-rubber as similar solution adopted in analog turntable.
A original magnetic clamp system give more stability to the rotation the CD disc so to have the double stabilization on two axis: orizzontal and vertical.
Type of Unit: Top Loading Integrated CD Player with Real Tube Circuit &
External Power Supply
Harmonic Distortion: THD 0.1 %
DAC Type and Filter: 24 bit / Dual Mono Burr Brown PCM1704
with DSP Over Sampling Filter.
S/N Ratio: 98 dB ( A-weighted )
Tube for Amp Stage: ECC81/12AT7 selected & matched by Lector
Frequency Response: 20 - 22 kHz +/- 1 dB
Digital Inputs/Outputs:
Optional output: S/PDIF and Toslink or ST-II/AES-EBU XLR
Analogue Line Outputs: RCA ( 2.5V - 3 V / 250W )
Switchable Main Voltages: 100/110/230/240 VAC - 50/60 Hz - 80 VA
Dimensions ( W x D x H ): 440 mm x 308 mm x 85 mm
Weight ( Net - Gross ): 9 kg - 10.5 kg
ExternalPower Supply: PSU-3T
Dimensions: 200 mm x 308 mm x 85 mm
Weight ( Net - Gross ): 5 kg - 6 kg



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