AMC 3050a - Solid State Preamp/Amplifier



AMC 3050a

Solid State Preamp/Amplifier

2-Channel, 2 x 50w, Remote Control, Phono Preamp

APPLICATIONS AND FEATURES

  • Unique phono stage design that employs two audiophile grade op-amps per channel that provide very low THD, TIM and noise, together with switchable MM/MC sensitivities.

  • The high overload tone control stage can be completely by-passed with the DIRECT switch to give natural sound quality.

  • Special designed passive Tone control circuit to give natural sound quality.

  • Uses audiophile grade components through out, providing exceptional accuracy to phono and tone control responses.

  • High overload margin on tone control circuit by virtue of its topologies.

  • Power amplifiers with 30 Amp high peak output current devices to offer capabilities to drive almost all types of speaker systems.

  • Power amplifiers with special designed perfect virtual image topology to make it possible to be without output relays. The topology connects amplifier outputs to speaker systems without relay contacts to offer best possible sound quality.

  • Using high output current devices with optimized power supply designs, the power amplifiers can be only protected with fuses on power supplier side in order to delivery extremely high output current in demand to give superb sound quality.

  • With universal power transformer passed all international safety standards, end users can uses the unit in all countries by rewiring the voltage links inside the unit by authorized distributors or dealers.

  • Heavy duty gold plated speaker binding posts and phono connectors for ultra reliable connections.

  • Toroidal power transformer.

  • Use Analog to Digital converter and dedicated microprocessor to convert motorized pot positions to select proper input by selecting from front panel by hand or from remote control. (This is a patent pending design of Weltronics Corp.) Once you press the remote control, the input selector rotary knob will be driven by motor to the position selected and input switch will select the selected input. This give AMC product a very reliable way of making remote input selector into rotary type that normally other manufacturers has to spend a lot of money to do the same job in order to give the neat and elegant analog way of input selecting.

  • The ADC/ microprocessor type of remote rotary control will make it possible to do any number of inputs in the future as required.

  • The volume control uses high end motor driven type of VR to give sound quality same as high end pre-amp without remote control.

  • The volume control also controlled by the same dedicated microprocessor controlling the rotary input selector. This make it possible to have the unit controlled by AMC standard codes - the AMC C-Bus codes.

  • 3050a will be upgraded to be with AMC C-Bus connector on rear panel in order to be able to be connected to other AMC products with AMC C-bus connector including to go with AMC RCP01, Remote Control Pad to control from remote locations or through Power lines via AC outlets.


SPECIFICATIONS

Rated Power into 8/4 ohms

45/60W

Rated THD 20-20KHz

0.05%

1kHz clipping power into 8/4 ohms

48/65W

Input sensitivity for 1W/Rated Power

High level inputs: 23mV/150mV
Phono Input MM: 0.5mV/2.7mV
Phono Input MC: 0.05mV/0.27mV

Input impedance

High level inputs: 20K ohms
Phono input MM/MC: 47K ohms/100pF

Frequency response

Tone bypass 20-20KHz: +/-0.5dB
Normal 20-20KHz: +/-1.0dB
High level inputs -3dB: 10Hz/60KHz

Signal to noise ratio (ref. 1W/8 ohms)

High level inputs +W+WWTD: 88dB
Phono input +W+WWTD: 88dB

Separation 20-20KHz

>65dB

Tone control range

Bass at 100Hz: +/-10dB
Treble at 10KHz: -8/+11dB

Overall feedback

26/29dB

PHYSICAL PROPERTIES

Dimensions (W x H x D)

430 x 82 x 288 mm

Net Weight

6.8Kgs

Shipping Weight (4 Pieces)

30.9Kgs



LT-3050a Rev.B