Balanced A2

Balanced A2 Full Balanced Tube Line Preamplifier

The BALANCED A2 is Audio Experience level 3 full balanced line preamp with Remote Control . it use NEW Class A, + wave auto-balance circuitry offers wonderfully realistic, dynamic, open-sounding music that will please the ears and stir the soul of even the most discerning listener. The gain stage of the main circuit is a fully balanced design, each channel using TWO 12AU7 and ONE 5687WB vacuum tube to form zero negative feedback (0 NFB). The A2 line stage employs specialized tubes to project a clean, fresh soundstage while effectively preventing RF and vibration interference. The low impedance output stage is defining yet truthful to each note.

The Balanced A2’s application of a highly efficient solid-state regulator in the HVB+ power supply produces a sonic quality that is completely stable, lively, and rhythmically true to its source. At the heart is an extremely quiet power supply comprised of a fast, large current, R-core transformer. The shortest possible cable connections inside are the signature of the Mr. Chui ’s master craftsmanship.

Features

Full Balanced Design
One High grade 5687WB tube and Two 12AU7 tubes for each channel
Remote Control with input select , volume control , mute
All input and output both with XLR and RCA
(4) stanard inputs , (2) sets of main outputs and (1) Record out.
(1) Processor input with Home Theater Bypass loop (HT/BP)

New version 1.5 is available, now.
The new version use 4pcs 12AU7 and 2pcs 5687WB ( before version use 4pcs 12AT7 and 2pcs 5687WB ).
That improved the S/N and bass control.

Feedback and Review for BALANCED A2 fully balanced line Preamplifier : Click there

Black Faceplate Color version available ,Now

Specifications

Controls : L Gain , R Gain , Main Volume , Input Selector , Power On/Of

Remote Control : input select , volume control , mute

Output : Two Main with XLR / RCA , One Record with XLR / RCA ,

Input : L1 , L2 , L3 , L4 with XLR / RCA , Processor with XLR / RCA ( HT/BP )

Output Impedance : 500 ohms Balanced , 250 ohm SE Main.
Recommended load: 10K ohm or greater ( Balanced ) , 5K ohm or greater ( SE ).

Frequency Response: 8Hz ~ 250KHz(-0.5dB)

T.H.D : <0.03% (20Hz ~ 20KHz /2V)

Input Impedance: 100K ohm XLR

Gain: 17dB at Balanced output , 12dB at SE output

S/N: >109dB

Channel Balance: <0.2dB(20Hz ~ 20KHz /max output)

Channel Separation: >95dB(2Hz ~ 20KHz)

Phase Mode : Normal

Max Output : 46V

Line-Stage Tubes : 4pcs 12AU7 , 2pcs 5687WB

Dimension: 455mm x 350mm x 120mm (W x D x H)

Weight: 7kg

Power Source: 110-127/220-240V,50/60Hz

Direct Price : USD$998

The shipping by Air post to USA and Europe is US$98

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