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HOME > Shopping > RA2B-FE
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Prime dac
Prime IE MAX
super value pack
RA2B-FE + prime IE MAX
Please select a Editions
4.4(male)-Dual 3 pin XLR(male)
piece (999 pieces available)
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Product Details
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simplified info on the coming 3 with Megatron.

  1. Megatron is the Mega dongle that can drive hard to drive stuff (high impedance with low sensitivity) , basically the best with limited power, and for the designed usage, it is as good as other's desktop stack if not better, but it is NOT designed for super sensitive IEMs

  2. Prime IE MAX is the opposite of the Megatron, it is the best you can get for sensitive IEMs with unlimited power ( 18650 battery x 4) and it is also something we designed to make you understand how good your IEMs can really be at the same price of those super priced / low powering / not refine at all dongles 

  3. Prime DAC is the pure dac, basically the DAC section of the Prime IE MAX, and it is designed to be a desktop level pure dac inside a small case

  4. RA2b FE is all about super clean customized 16.8V direct powering solution, to get you the best of all the experience in combo with Prime DAC and basically enough to be most people's end game stack.

Detailed info with SPECs

1st ,  RA2BAL-FE

Please first read everything on our Prime DAC

RA2b-FE is designed to work with Prime DAC, and it is some consider crazy powerful, with 3W+3W (full BAL from 4.4 port at 32ohm load), and yeah it is fairly crazy for a pure portable AMP.....

However this is NOT its best feature to brag about, ALL our pure amp so far has been with our "DIRECT Power" design.

RAP5th is using the same warp core as the 2B-FE, and we customize battery to be 16.8V so that we do NOT have to do all those DC to DC voltage booooost which will bring-in extra noise that we can NOT really get rid of without compromising on stuff like dynamics, and the best way to power a portable amp is to use battery to power them DIRECTLY,

So unlike everybody else or like our very own megatron, we customize the battery to directly power the amp with only dividing them in between, I know some will be asking why can't we use two batteries with each powering the + and - side of the powering like the Hifiman earlier DAPs (like the hm901), that design sounds fancier but wont get our a stable equal voltage , by dividing them, you are always getting the same voltage between + - and to have two battery for each -+ will NOT get us the stable sound as they wont have the same voltage over time. And our Defiant has been a proof of our design concept since 2019, and our earlier full balanced AMP dates all the way back to 2017, which has been more than 5 years ago, so after we have made the single BEST portable amp, our Defiant, we have decided to do a RA2B-FE, with the advancement of the parts over the last few years, we can make the a lot smaller / cheap and only comprosming 40-50% of the power from the original RA2B which was about 6w+6w from the 4pin XLR port, and we have made them with a full bal input and a 4.4 output with BAL and a 3.5se with single.

for most of us in this hobby, this is the end game solution for 99% in this hobby...hence we called it the end game stack.

2nd the Prime IE MAX Edition 

After reading through the other two new gears, the prime ie max edition is aimed to be the end game solution for all IEMs (and easy to drive earbuds like IEMs)

Model:Runabout 2 BAL- FE

Connector Complement:

1×4.4mm TRRRS jack for Signal Input

1×4.4mm TRRRS jack for Earphone Output

1×3.5mm TRS jack for Earphone Output

1×DC5.5/2.1 power jack for DC in

Frequency Response:20Hz-20KHz,±0.05dB

Maximum Current Output:0.5A Balance

Maximum Voltage Output:5V RMS Unbalance,10V RMS Balance

Maximum Power Output,32ohm,SE:780mW RMS per channel

Maximum Power Output,32ohm,BAL:3000mW RMS per channel

Maximum Power Output,300ohm,SE:85mW RMS per channel

Maximum Power Output,300ohm,BAL:330mW RMS per channel

Maximum Power Output,600ohm,SE:40mW RMS per channel

Maximum Power Output,600ohm,BAL:165mW RMS per channel

THD:≤0.015%,20Hz-20KHz,2V RMS

IMD:≤0.0003%,2V RMS

SNR:≥106dB,2V RMS,A-weighted,gain=6dB



Topology:INA Pre-Gain,Dual mono,Precision virtual ground reference,Isolated power supply

Power Supply:16.8V Power box or  <18V DC adapter  

Power Consumption:0.2W

Size:131*73*44mm(with Power box)

Weight:536g(with Power box)


Hello, thank you for choosing VE.
Our customer services will not work in Chinese New Year. But you can leave us message.
We will respond you after the Holidays. All the warranty period will extend 10 days.

We are deeply sorry about the shipping delay during our Chinese New Year holiday season,
which is the longest, biggest and the most important holiday for us Chinese.

We will stop shipping during 09/02/2021-19/02/2021. All the shipping agencies will not work in these days.
The orders in Chinese New Year will be sent after the Holidays.

All the shipping from China may delay. Please bear with us just a bit longer(normally 7 days ) and happy holidays.

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