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Topping NX3 Portable Headphone Amplifier

SKU: Topping-NX3

NX3 Portable Heaphone Amplifier

PA6120 amplifierm Mega Bass feature, 25 hour playback

Discount only till stock lasts

Regular Price: $169.00

Special Price $149.00

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Product Description


The TPA6120A2 is a high fidelity headphone amplifier. it’s current-feedback AB amplifier architecture delivers high bandwidth, extremely low noise, and up to 128dB of dynamic range.

OPA2134 HIFI Operational Amplifier

The OPA2134 is ultra-low distortion, low-noise operational amplifiers fully specified for audio applications.

Aluminum body

A highly automated machining center needs more than 46 processes to make a NX3 aluminum case.

Matte surface

We use the same surface blasting process as the Macbook Air to get a fine matte effect.
All characters are engraved on the surface by laser.

Easy to use

2 notches on the side of te panel make for easy access to the volume knob.

Toggle switch for gain and bass control are easy to operate and read.

Selectable Mega Bass

If bass is off, mega bass circuit will be fully cut off, it will not bring you extra distortion or noise.

High-quality components

NX3 has a good amplifier chip, better components will upgrade it’s performance to greater heights.
That’s why we use ALPS potentiometer, WIMA capacitance, and also gilded the headphone jack, the switch and the PCB.

Long playback time

2400mAh Lithium Ion battery provides more than 25 hours of playback time which needs less than 4 hours to be fully charged.
30 min charge could provide 5 hour playback time if low power

Low battery reminder

Adaptive Charging

NX3 automatically fits a 0.5A current from a PC’s USB port and a 1A current from a USB charger. It takes less than 4 hours to fully charge NX3 at a 1A charge current.



Analog input 1 x 3.5mm
Headphone output 1 x 3.5mm
Playback time Approx 25 hours
Net weight Approx 145g (unit only)
Dimensions Approx 6.6CM x 1.3CM x 10.8CM
Includes 1 x NX3
1 x Audio cable
1 x USB charge cable
2 x Silicone band 
5 x Velcro
1 x User's manual
Suitable Headphone Impedance 16-300Ω
Maximum output power 103mW (RL=16Ω, THD+N=1%)
98mW (RL=32Ω, THD+N=1%)
30mW (RL=250Ω, THD+N=1%)
Maximum output voltage swing 8.3Vpp
Minimum THD+N 0.0018%
THD+N(@1kHz) 0.0031% (RL=32Ω, Pout=5mW)
0.0032% (RL=32Ω, Pout=50mW)
Frequency response 10-100kHz (20-20kHz±0.2dB)
Input sensitivity 1Vrms (GAIN=L); 0.52Vrms (GAIN=H)
Noise <9μV
Gain(@1kHz) +0dB (GAIN=L); +9.2dB (GAIN=H)
SNR 108dB (RL=250Ω, GAIN=L)

Why buy from us?

Why buy from us?

Rapallo is an independently owned New Zealand company and with more than 15 years experience, we offer you both technical expertise and superior service.

Rapallo is fully authorized to sell products by all of the manufacturers listed on our website and in our store. In most cases we are more than a reseller, we are a direct dealer who also receives training and where possible we personally test products we sell.

Authorized dealers like us offer peace of mind. Rapallo

  • meets manufacturer's standards, from sales to service, in order to receive authorized status.
  • often receives training directly from manufacturer representatives and shares that expertise with you.
  • provides  support for all the products they sell.
  • ensures that manufacturer warranties will be honoured.
  • buys directly from big brand manufacturers and guarantee you buy NZ new, (no grey imports or parallel imports).

The Internet is an incredibly convenient information source and a wonderful way to find savings on the products you want. Protect yourself online by buying from authorized dealers, with genuine feedback and reputations.

A price too good to be true, usually is.
If you've ever searched for a product on a shopping engine (such as Priceme/Pricespy) you may have asked yourself, "Why are some stores charging so much less than other stores?"

Our customers often share these stories with us, so we thought we would share a few with you, in hopes that you don't fall prey to any of these unscrupulous sales tactics.

  • Goods may be grey market/parallel imported. They may state that the product includes the manufacturer warranty, but not tell you that the warranty is valid only in Europe, Japan, or South America, and NOT in NZ.
  • You may be asked to buy an expensive extended warranty. In many cases if you do not purchase the warranty, your purchase will be denied. (The product is now out of stock, your card does not go through, etc.)
  • Included parts may be sold to you separately. Some resellers will open boxes and charge extra for parts that are normally included by the manufacturer.
  • Hidden charges which don't show up until your credit card statement arrives, these charges only show up when your credit card statement is sent to you.
  • When something goes wrong, faulty, late delivery, doesn’t matter how many times you try to email, they don’t get back.
  • There are so many scamming online sellers today, “buyer beware” protect yourself!

Think you have a better price from someone in NZ (authorised dealer)? Call us, we'll see what we can do.

12 months interest free over $1,000 or 18 months interest free over $2,000 finance available (on non-discounted items). Apply here.

Call us 09 2744515

Concerned About Fraud?

The internet has become a more popular source for online shopping, regrettably we have seen more and more instances of fraud affecting online shoppers. Companies trading under many  different names, loading warranties and charging for them as extras when often they are included from the manufacturer. Parallel imports or personal imports where the NZ supplier refuses to repair when things go wrong is often alarming to the unsuspecting purchaser. Inflated freight charges, customs and GST at the border are often forgotten as a buyer is tempted by a lower price. Constantly we hear all these stories, once bitten it’s all to late looking for that refund or replacement. The stories are outrageous at times, customers from Trademe and ebay with no place to turn, time consuming and very frustrating….

So how do you protect yourself from online fraud?

  • Buy from an authorized reseller. If you are at all suspicious, contact the manufacturer directly and ask if a company is authorized to sell their products.
  • Make sure you get a company invoice with GST clearly marked.
  • Make sure you buy from someone who has a phone number and an address on their website, not a P.O.Box number
  • Read customer feedback, you can usually tell if it's genuine or not.

We hope that you will become our next happy customer. And we promise to offer you superior service before, during and after your purchase.