Ys Audio ExperienceBalanced A2新網頁1 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...998.00

Ys Audio Experience Balanced A2 line preamplifier (version 1.5 [Expired]

no longer for sale


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.


  • 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.

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

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

Black Faceplate Color version available ,Now


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

The preamplifier Include : Box , Power Cable , Manual , All Tubes.

2 year warranty ( not include tubes and ship cost )

The Payment Methods and Shipping

I can ship the preamplifier to any local.

Please, e-mail to me ask about the cost of shipping .

Factory Direct Sell from Hong Kong .
Made in Hong Kong.
This is promotional price

For more information, please click to YS-Audio Online


USA distributor

The Pacific Valve & Electric Company
1921 Wilson Street
Suite A # 111
Batavia, IL 60510

Web site : http://www.pacificvalve.us

E-mail: info@pacificvalve.us

Seller Information


Last 12 months

Member since November 2009

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