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Details about  New MK 2 Class A Hybrid Tube Headphone Amplifier 6922EH

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New MK 2 Class A Hybrid Tube Headphone Amplifier 6922EH
Item Sold
Item condition:
Feb 26, 2012 05:07:34 PST
US $69.99
$18.00 Economy Shipping | See details
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Item location:
Indeed Hi Fi Lab China, Hong Kong


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Jan 18, 2012 10:16:15 PST  View all revisions

Item specifics








New Version MK2 Indeed Valve Class A Hybrid Headphone

This item is selling in electro-harmonix  6922EH valve tube

Product Description

Payment & shipping

  • 2010 New product by Indeed Hi Fi Lab
    Pure Class A  Headphone Amplifier & Pre Amplifier
    Hybrid ! Valve & MOS-FET in Use!!
    Without any OP amp IC inside!!!
    Audiophile Performance Design Absolutely!!!
  • Our Indeed headphone amplifier is different to others.
    A/ High grade Caps &
    Panasonic resisters, ALPS volume in use.
    B/ High cost Large 24V2A low noise adapter with grounding.
    C/ Precision select 6922EH valve, also match R/L channel within 1dB out put differential.
    D/ We are the original designer; it sell hundreds and very good feedback in history!
  • It is a high value and cute headphone amplifier hook up to your PC / Mp3 /MP4/ ipod / any stereo device. You can have a  powerful, dynamic and sweet TUBE SOUND from your headphone ! You’ll be astounded at the improvement in sound quality, dynamic range, meticulous transparency, completely demonstrate its high performance and analytical ability, it can also connect with power amplifier such as a high performance pre amplifier to improve your Hi Fi system.

    Circuit design reference by Indeed Hi Fi Lab
    New electro-harmonix 6922EH tube made in Russia

    (we have carefully choose and test in Lab).
    The each one of 6DJ8/6N11/ECC88 is fully suitable for replacement with much difference musical taste chose by owner. (6DJ8/6N11/ECC88 Excluding in this item for sale)!

  •  FAQ
     Q: what is Class A ?
     A: Class A means that the power tube conducts the same amount of current all the time, whether idling or producing full power. Therefore, it will be high temperature from power MOS FET in normally. Class A is very inefficient with electricity but usually gives very low distortion. This is to decrease the distortion such as a high-end amplifier.
     Q: Can I change the 6DJ8/6922 tube to improve the sound quality?
     A: The each one of 6DJ8/6922/ECC88 is fully suitable for replacement with much difference musical taste chose by owner, but it is not 100% improve the sound quality absolutely; some time it can change to the favorite sound by carefully chose; a precession selects and checking is most important. Never superstition to the high price tubes!!

  • Technical specification:
    • In Put Power: DC24V 600mA

    • Input Sensitivity:50mV

    • Input Impedance: 100KOhm

    • Out-Put Impedance:16~600 Ohm

    • Dynamic range: 84.6dBA((300 ohm) 89.8dBA(33 ohm)

    • Gain:20dB

    • Frequency response:10Hz-60KHz +/- 0.25dB

    • Minimum THD:  0.016%(300 ohm)  0.45%(13 ohm)

    • Signal/Noise Ratio >91dB

    • RCA 2CH Input X1

    • 6.3mm 2CH Output X1

    • Shipping Weight: 1kg

    • Transformers AC100V ~AC240V\50~60Hz  1.8A  DC output 24V2A

    • It has a ferric filter ring on DC power cord to reduce noise; much high performance than other similar product.

    • Dimension:80mm (D) X 80mm (W) X 48mm (H) not measure to tube and transformer.

We accept Paypal only,it is fast, easy and safe.
International shipping charges by AIR post. It usually takes 10-15 business days (almost 2~3 weeks)to arrive.deliver shippment fastly and seldom lost parcel.
The item will be shipped via Hong Kong Registered Air Mail
 with tracking number to trace on web and marked as gift.
 Please allow 2 to 3 days on processing for the order. 
 However, package to following country may need longer time due to strict custom insepction: Italy, Brazil, Spain, France, Germany.
International order will be processed in 1 - 2 business days.
We can also provide express post by EMS(5-8 days) or DHL(4-5 days). The cost is a higher than standard postage, about US$25 or higher.
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility.
Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying.

Contact us:

     We are China commerce enterprise with our own affiliated factories. We have pointing office shipping the items to overseas.

 We are supplying many items to all over the world. High quality, reasonable price, considerable service,

reliable credit standing is our tenet.


It's my pleasure to response

any questions about Hi Fi technology.


                 What is different coming?
MK2, it has change from old version Indeed Valve Class A Hybrid Headphone.
We have improved the product as below.

1/ Long life power switch.
2/ Large 3 pcs capacitors 6800+1000+1000= 8800 Mfd for power reserve.
3/ Heavy duty headphone phone socket
4/ Full metal RCA socket
5/ Panasonic Resistors and Wima Cap in used.
6/ New design circuit on PCB.

   Indeed Hi Fi Lab stands behind all of its products and services. Check our feedback and bid with confidence.

Package Contents:  Also shown as photo !

  1. 1 x Headphone Amplifier

  2. 1 x electro-harmonix 6922EH tube made in Russia

  3. 1 x 1M AC power cord ( the plug depend on buyer country )

  4. 1 x Switching Power Supply Universal AC 100V-240V~1.8A / 50~60Hz to 24V DC 2A out put
    (Auto-Detect International Compatible)

  5. 1 x 6.3mm to 3.5mm Gold coat earphone Jack adapter.


Positive feedback rating EXCELLENT PRODUCT. SOUNDS LIKE A $2000 AUDIOPHILE EQUIPEMENT ! THANKS. Buyer: Mar-04-11 12:41
  Indeed MK2 Class A Hybrid Tube Headphone Amplifier 6922 (#290527998914)

Positive feedback rating wow,these were more impressive than i imagined!!! excellent, thank you very much   Sep-02-10 07:38
  New MK 2 Class A Hybrid Tube Headphone Amplifier 6922EH (#250678977383)


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