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Details about  Indeed G2 Headphone Tube Pre Amplifier ECC82EH Class A

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Indeed G2 Headphone Tube Pre Amplifier ECC82EH Class A
Item Sold
Item condition:
Nov 26, 2012 23:33:01 PST
US $89.99
$20.00 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  Aug 20, 2012 12:32:37 PDT  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition


Audio Inputs:

Stereo L/R RCA



Audio Outputs:

Headphone Jack, Stereo L/R RCA


Tube Headphone Amplifier Class A


New Version G2 Indeed Valve Class A Hybrid Headphone/Pre-Amplifier

This item is selling in 100% new Electro-Harmonix  12AU7A/ECC82EH Made in Russia tube

Product Description

Payment & shipping

  • 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 &
    Dale resisters, ALPS volume in use.
    B/ High cost Large 24V2A low noise adapter with grounding.
    C/ Precision select 12AU7 valve, also match R/L channel within 1dB out put differential.
    D/ We are the original designer; the old version 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
    Electro-Harmonix  12AU7A/ECC82EH Made in Russia

  • (we have carefully choose and test in Lab).
    -Using Elna Caps and Dale resistor.
    The other 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 6DJ8/6922/6N11/12AU7/6N23P...... 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!!

     Q: I find a similar product with 3 bands EQ, does it better than your G2?

     A: By our sense, any tone control will be colorless the sound and distortion, so you cannot find any high-end device with a tone control; it also build in mid/low grade Hi Fi device except Marantz 7 / Cello Audio Palette.

    Technical specification:

    • In Put Power: DC24V 900mA

    • Input Sensitivity:50mV

    • Input Impedance: 100KOhm

    • Out-Put Impedance:12~600 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 >92dB

    • RCA 2CH input X1 / 3.5mm 2CH input socket X 1  / RCA 2CH output 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:100mm (D) X 100mm (W) X 50mm (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?
G2, it has grown up from old version Indeed Valve Class A Hybrid Headphone/Pre-Amplifier, we does not satisfy to let it improve only!
We have modified to generation II now, so that we call it
1/ Output signal also15 seconds delay when power on, it is important to reduce the ‘pop’ pulse, safe to your ear and speakers.
2/The thick of PCB increase to 1.8mm with carefully design grounding, the RF pollution and noise ratio also improved.
3/ There are ALPS signal selector, long life 10000times power switch, heavy duty I/O parts & switches to use.
4/ It is good news to ‘tube roll’ people, easy to change the tubes with switch (bias adjust is necessary), 6 series for 6DJ8/6922/ECC88/6N11/6N23P; 12 series for ECC82/12AU7/12AT7/6N4……also too many choose by owner right now.
5/Ultra large current Class A output design, it can drive the low impendence headphone in 12 Ohm loading; a very deep and powerful bass you will be hear !
6/ Audiophile Performance Design Absolutely! It can direct hook up to power amplifier such as Pre Amp to use; it will kill any pre amp with US$1000- price (may be higher)!!


"Dale" resistors is very high cost than other similar product, it working most stable in long life and also sounds…
• Precise pin pointing focus.
• Equal resistance (L/R) all the way.
• Deeper depth and sweeter vocal.
• Cleaner bass and sweeter treble.
• Sound image is much improved. Pin point image!!!

If you would like to take total care of your amp, resistors are the first one to be focused. Resistors are used more of any other components in an amp circuit, therefore each small impact can make a big difference in total.

Package Contents:  Also shown as photo !

  1. 1 x Headphone Amplifier

  2. 1 x Electro-Harmonix  12AU7A/ECC82EH

  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.


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

Positive feedback rating Upper high end amplifier! This is a winner!! Buyer: May-13-10 07:16
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250606723866)

Positive feedback rating High Quality Headphone/Pre-Amp Very loud and clean + excellent stereo imaging Buyer: Apr-18-10 13:06
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250610341618)

Positive feedback rating HK to Perth, WA took 4 days! Sounds amazing. True hi-end audio Buyer: Apr-12-10 07:29
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250592291188)

great amp, great seller, buy one and you'll not be disappointed. Buyer: Apr-09-10 21:38
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#290417534177)

Positive feedback rating Very nice, G2 is a significant improvement over G1, highly recommended! Buyer: Apr-01-10 23:04
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250597154423)

Positive feedback rating Stunning little Amp, love it, great coms, and backup, highly recommended A1+++++ Buyer: Mar-17-10 13:24
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250591795817)

Positive feedback rating Wonderful amp & sound & service. Highly recommended. Truly great value. Buyer: Mar-15-10 08:19
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250591795817)

Positive feedback rating Very nice Amp, well built, well packaged and fast delivery. Thanks Peter! Buyer: Mar-15-10 03:43
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250591795817)

Positive feedback rating Item arrived quickly and as described A+ Buyer: Mar-13-10 13:03
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250591795817)

Positive feedback rating Super little amp, recommended Buyer: Mar-13-10 02:48
  New G2 Class A Hybrid Tube Headphone Pre Amplifier 6922 (#250591795817)

Positive feedback rating Very nice product, Excellent sellers. Class A++++++++++++ Buyer: Mar-12-10 00:19
  Indeed Class A Hybrid Tube Headphone Amplifier 6922 EH (#290393135321)



How can it be? Why do expensive HP and pre amps have to be so big and so expensive when something so small and inexpensive out-perform many of them. Not that I've heard a lot of expensive amps but this is stunning IMHO. I'm listening to mp3 tracks out of my iPod that I am very familiar with and hearing things I've never heard before, particularly in the bass area.
I'm now going to feed it from my mod'd Beresford 7520 DAC and play some FLAC files from the PC - should be even better.
In terms of SVPP this has got to be my best buy by far.
More to follow.
Smug and Satisfied of Sheffield.

PS and yes, I like it, a lot!! davek    

had my G2 running for a couple of hrs with supplied E. Harmonix 6922 and PSU on loop before listening test.

First impression is, very nice, not creaming my pants yet, as the Brxxx and Mixxx are a tough act to follow.

Its giving me a very strong prior warning of incoming texts, and not quiet as strong on outgoing ones. No HISS at all, at anything other than insane listening levels, and NO HUM at any level.

The sound is very spacial, easy to place individual instruments, and nice detailed clean deep Bass, accurate smooth Mids and crisp top end. cymbals, violins etc are very nice.

Overall very nice and i am pleased with it, more time for it to settle, and then maybe some extra pairs of clean underwear will be required.

Will report back tonight with a days running on it.   17-3-2010 heliharris


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