---
product_id: 2010577
title: "AIMPIRE Little Dot I+ 6JI X2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (LDI+)"
brand: "aimpire"
price: "14398954₫"
currency: VND
in_stock: true
reviews_count: 8
url: https://www.desertcart.vn/products/2010577-aimpire-little-dot-i-6ji-x2-tube-standard-hybrid-headphone
store_origin: VN
region: Vietnam
---

# Compact size: 7.08" x 3.81" x 3.93" 150mW @ 300Ω power output User variable gain: 6.5x or 3.25x AIMPIRE Little Dot I+ 6JI X2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (LDI+)

**Brand:** aimpire
**Price:** 14398954₫
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game with tube-powered precision — don’t just listen, experience!

## Quick Answers

- **What is this?** AIMPIRE Little Dot I+ 6JI X2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (LDI+) by aimpire
- **How much does it cost?** 14398954₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/2010577-aimpire-little-dot-i-6ji-x2-tube-standard-hybrid-headphone)

## Best For

- aimpire enthusiasts

## Why This Product

- Trusted aimpire brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored Sound Control:** Dual gain settings let you customize output to perfectly match your headphones and listening style—because one size never fits all.
- • **Compact Powerhouse Design:** Sleek, space-saving footprint fits seamlessly on your desk or audio rack, proving that great things come in small, stylish packages.
- • **Upgrade Your Sound Arsenal:** Easily swap tubes and op-amps to craft your signature audio profile—unlock endless sonic possibilities and stand out in your circle.
- • **Audiophile-Grade Compatibility:** Drives headphones from 8 to 600 ohms effortlessly, making it the ultimate partner for your prized Grados and other low-impedance favorites.
- • **Hybrid Tube-Transistor Synergy:** Experience the warm richness of vacuum tubes combined with the precision of transistors for a sound that’s both dynamic and detailed.

## Overview

The AIMPIRE Little Dot I+ 6JI X2 is a compact hybrid tube headphone amplifier delivering up to 150mW at 300 ohms with a frequency response spanning 10Hz to 50kHz. Featuring gold-plated RCA inputs and 1/4" headphone output, it supports headphones from 8 to 600 ohms impedance. With user-selectable gain settings and replaceable tubes and op-amps, it offers customizable, high-fidelity sound tailored for audiophiles, especially those using Grado headphones. Its small footprint and 1.5kg weight make it a stylish, versatile addition to any professional audio setup.

## Description

Input: Gold Plated Unbalanced (RCA) Jacks Output: 1/4" Gold Plated Stereo Headphone out Tube Options: 6JI standard Frequency Response: 10HZ ~ 50KHz (minus3 dB) THD plus N: 0.2 percent: 1Vrms @ 1000Hz 0.6 percent: 3Vrms @ 1000Hz 1.0 percent: 5Vrms @ 1000Hz Signal to Noise: 92dB Suitable Headphone Impedance: 8 ~ 600 ohms Input Impedance: 50K ohms Power Output: 150mW @ 300 ohms 300mW @ 120 ohms 800mW @ 32 ohms User variable gain settings: 6.5x or 3.25x Power Consumption: 15VA Measurements: Metric: 180mm (L) by 97mm (W) by 100mm (H) English: 7.08 inches (L) by 3.81 inches (W) by 3.93 inches (H) Weight: 1.5 kg or 3.3 lbs. Available in Black Available in either 120VAC or 220VAC

Review: Incredible with Grado Headphones! - First off, this amp is absolutely legendary when paired with Grado headphones, so if you own any in that lineup, make sure you read the reviews on head-fi.org and other sites. Secondly, this amp isn't amazing out of the box. The stock chinese 6JI tubes aren't bad actually, but replacing them should be the first order of business. Read the reviews to find out which tube family suits your taste in music, but this is a pretty versatile amp that can accommodate a wide range of tubes. Make sure you save the two jumpers that come bundled in with the cables. They are very small and easy to miss! This is a bargain and a fantastic sounding amp, but be careful about choosing the right tubes - Grados are revealing and sometimes, static is introduced with the wrong tubes. Lastly, the Opamp is replaceable as well! So you can tube and opamp roll with this amp. The synergy with Grados cannot be overemphasized enough. If you have Grados: SR-60, 80, 125, 225, 325, RS2, RS1 and beyond, these are magnificent and will really make your Grado's shine. The Little Dot 1+ is designed to drive current into low impedance headphones. In theory, that means any low impedance headphone would be great, but that's not the case. I have a pair of Audioquest Nighthawk Carbons that are 32 ohm cans, and they just don't sound right with the Little Dot 1+. My Grado SR-325 on the other hand, absolutely sings. Even in the stock configuration, this amp really makes the Grados come alive. The dynamics, the transients (listen to the Bangles "Hazy Shade of Winter" on a Grado and this amp and watch the drums come alive), female vocals, stringed instruments like acoustic guitar and violin, Blues (Anything Stevie Ray Vaughan sounds amazing), Metal, Rock. The only weak spot appears to be Hip Hop and Dance Music, but that's why I have the Audioquest Nighthawks and a Schitt Magni-Modi handy for those situations.
Review: You'll be hard pressed to find a need for a better hybrid-tube amplifier than this for the money! - **Update with recommendations 9/20/19 at bottom** I'd like to start with all of the information that is relevant to this review. I have been into high-end audio for over a decade now, the entire time as an adult and I am above all other things, a music lover. Secondarily I am an audiophile and former musician of multiple instruments. Music, it's production and the listening experience are what I prize in my free time. My setup is as pictured: Tidal (HiFi) PC - Topping D30 DAC - Topping A30 Amp (using pass-through) - Little dot I+. I'll be frank, are there bad units out there from any manufacturer? Yes. Are the majority of issues with this amplifier setup related? Yes. You wont need to be an electrical engineer to set this up right but there are a few things that will go a long way to having a very satisfying purchase and end user experience. For starters if you use and external DAC (digital to analog converter) this will help. Preferably one that is not USB powered. Why does this matter you may ask and I'm happy to answer. Using your on-board PC sound card or phone or other battery powered device *MAY* create a ground loop. If so, you *MAY* hear humming or buzzing in your headphones when you use this. Just keep that in mind. An easy way to test is to have headphones plugged in to the amp, with the power on, and no RCA cable connected to the rear. If you do this and hear no hum/buzz/noise but when you connect RCA’s you do, then the issue is either a faulty cable or ground loop from a shared ground in your system. So now that we've addressed the most common issue people have had with this amp on with the review then. I have had zero issues with my LDI+ save the fact it's ridiculously loud. I don't listen at "I want to go deaf by 40" levels of sound but I don't play my music quietly either. Even with 300 ohm headphones on low gain I cannot get above 30 on the volume knob. So just accept you may be using very, very little of the volume knob. The good news is the channel imbalance fades out very fast and by about 8 both channels are the same volume. This is par for the course for a device at this price but the volume pot is not scratchy and makes no noise for me during any of my use. I have rolled the Op Amp and have purchased several more to find what I think is best. I also have purchased two additional pairs of matched tubes. Contrary to popular opinion the stock tubes are a lot less "garbage" than people would lead you to believe. If you run them in for about 20 hours you'll find the amp is actually setup pretty well out of the box. I started listening after having the amp on for about 30 minutes and immediately liked the sound of it. Setup is simple and the only thing it doesn't actually cover is how to open the housing of the amp. Google it as seeing it will be better than if I explain it but there are only 4 screws. It takes about 50 seconds or so to do. I have the Vokshod's, and the GE JAN tubes as well. I am currently running in both tubes to the 50 hour mark. The current Op Amp I am using is the Burr Brown/Texas Instrument OPA2134PA. I also have in the mail the AD8066, OPA2107 and OPA2228, all authentic and all purchased from reputable vendors. I will update once the my tubes are burned in and when the additional Op Amps arrive. *Update* As promised, here's the recommendations on pairings. I tried Burson, MUSES, Burr-Brown, and AD Op-Amps. I tried GE Jan tubes, Vokshods and Mullards. I'm going to try to save you money here. Best overall pairing: Burr Brown AD8066 Op-Amp (you'll need to buy one that is already ready to drop in DIP-8. If you search you will find for about $8). Use this with the Mullard M8100 CV4010 5654. You will not have to change jumpers to use this. Outstanding width, depth, bass and vocal. By far and away the best sound I achieved out of this amp. Best for bassier or warmer headphones. Closed backs or those who have more narrow music preferences. Burr Brown OPA2107 (I recommend a legit channel here, about $20). Pair this with the GE JAN 5654W tubes. You can find them on desertcart but I feel like the price is getting a bit outrageous. They were $25.79 when I bought hem and now they have skyrocketed to $35. IMHO these are by far the best two pairings. I'd recommend you try one and if you like it you'll know that the other pairing is also a great option for you. The Vokshods, while good tubes, didn't do anything better with any of the Op-Amps I tried it with vs the other tubes. Best of luck!

## Features

- Little Dot I+ 6JI standard is a hybrid transistor-vacuum tube headphone amplifier
- Little Dot I+ 6JI standard offers versatility and incredible sound quality in a tiny footprint

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A2QM5O6 |
| Amplifier Type | hybrid,tube |
| Best Sellers Rank | #815,157 in Electronics ( See Top 100 in Electronics ) #893 in Headphone Amps |
| Brand | AIMPIRE |
| Built-In Media | amplifier |
| Color | LDI+ |
| Compatible Devices | all |
| Connector Type | RCA |
| Customer Reviews | 4.3 out of 5 stars 210 Reviews |
| Enclosure Material | LDI+ |
| Global Trade Identification Number | 00790996171524 |
| Item Dimensions D x W x H | 7.08"D x 3.81"W x 3.93"H |
| Item Weight | 3.3 Pounds |
| Manufacturer | AIMPIRE |
| Material | LDI+ |
| Mfr Part Number | Little Dot I+ 6JI standard |
| Model Name | Little Dot I+ 6JI X2 Tube standard Hybrid Headphone Tube Amplifier |
| Model Number | Little Dot I+ 6JI standard |
| Output Channel Quantity | 2 |
| Output Wattage | 0.15 Watts |
| Power Source | Corded Electric |
| Product Dimensions | 7.08"D x 3.81"W x 3.93"H |
| UPC | 790996171524 501946068708 600954121891 |
| Warranty Description | 1 year |

## Product Details

- **Brand:** AIMPIRE
- **Color:** LDI+
- **Compatible Devices:** all
- **Material:** LDI+
- **Output Wattage:** 0.15 Watts

## Images

![AIMPIRE Little Dot I+ 6JI X2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (LDI+) - Image 1](https://m.media-amazon.com/images/I/41woBtO7aWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Incredible with Grado Headphones!
*by M***L on August 4, 2020*

First off, this amp is absolutely legendary when paired with Grado headphones, so if you own any in that lineup, make sure you read the reviews on head-fi.org and other sites. Secondly, this amp isn't amazing out of the box. The stock chinese 6JI tubes aren't bad actually, but replacing them should be the first order of business. Read the reviews to find out which tube family suits your taste in music, but this is a pretty versatile amp that can accommodate a wide range of tubes. Make sure you save the two jumpers that come bundled in with the cables. They are very small and easy to miss! This is a bargain and a fantastic sounding amp, but be careful about choosing the right tubes - Grados are revealing and sometimes, static is introduced with the wrong tubes. Lastly, the Opamp is replaceable as well! So you can tube and opamp roll with this amp. The synergy with Grados cannot be overemphasized enough. If you have Grados: SR-60, 80, 125, 225, 325, RS2, RS1 and beyond, these are magnificent and will really make your Grado's shine. The Little Dot 1+ is designed to drive current into low impedance headphones. In theory, that means any low impedance headphone would be great, but that's not the case. I have a pair of Audioquest Nighthawk Carbons that are 32 ohm cans, and they just don't sound right with the Little Dot 1+. My Grado SR-325 on the other hand, absolutely sings. Even in the stock configuration, this amp really makes the Grados come alive. The dynamics, the transients (listen to the Bangles "Hazy Shade of Winter" on a Grado and this amp and watch the drums come alive), female vocals, stringed instruments like acoustic guitar and violin, Blues (Anything Stevie Ray Vaughan sounds amazing), Metal, Rock. The only weak spot appears to be Hip Hop and Dance Music, but that's why I have the Audioquest Nighthawks and a Schitt Magni-Modi handy for those situations.

### ⭐⭐⭐⭐⭐ You'll be hard pressed to find a need for a better hybrid-tube amplifier than this for the money!
*by D***N on February 5, 2019*

**Update with recommendations 9/20/19 at bottom** I'd like to start with all of the information that is relevant to this review. I have been into high-end audio for over a decade now, the entire time as an adult and I am above all other things, a music lover. Secondarily I am an audiophile and former musician of multiple instruments. Music, it's production and the listening experience are what I prize in my free time. My setup is as pictured: Tidal (HiFi) PC - Topping D30 DAC - Topping A30 Amp (using pass-through) - Little dot I+. I'll be frank, are there bad units out there from any manufacturer? Yes. Are the majority of issues with this amplifier setup related? Yes. You wont need to be an electrical engineer to set this up right but there are a few things that will go a long way to having a very satisfying purchase and end user experience. For starters if you use and external DAC (digital to analog converter) this will help. Preferably one that is not USB powered. Why does this matter you may ask and I'm happy to answer. Using your on-board PC sound card or phone or other battery powered device *MAY* create a ground loop. If so, you *MAY* hear humming or buzzing in your headphones when you use this. Just keep that in mind. An easy way to test is to have headphones plugged in to the amp, with the power on, and no RCA cable connected to the rear. If you do this and hear no hum/buzz/noise but when you connect RCA’s you do, then the issue is either a faulty cable or ground loop from a shared ground in your system. So now that we've addressed the most common issue people have had with this amp on with the review then. I have had zero issues with my LDI+ save the fact it's ridiculously loud. I don't listen at "I want to go deaf by 40" levels of sound but I don't play my music quietly either. Even with 300 ohm headphones on low gain I cannot get above 30 on the volume knob. So just accept you may be using very, very little of the volume knob. The good news is the channel imbalance fades out very fast and by about 8 both channels are the same volume. This is par for the course for a device at this price but the volume pot is not scratchy and makes no noise for me during any of my use. I have rolled the Op Amp and have purchased several more to find what I think is best. I also have purchased two additional pairs of matched tubes. Contrary to popular opinion the stock tubes are a lot less "garbage" than people would lead you to believe. If you run them in for about 20 hours you'll find the amp is actually setup pretty well out of the box. I started listening after having the amp on for about 30 minutes and immediately liked the sound of it. Setup is simple and the only thing it doesn't actually cover is how to open the housing of the amp. Google it as seeing it will be better than if I explain it but there are only 4 screws. It takes about 50 seconds or so to do. I have the Vokshod's, and the GE JAN tubes as well. I am currently running in both tubes to the 50 hour mark. The current Op Amp I am using is the Burr Brown/Texas Instrument OPA2134PA. I also have in the mail the AD8066, OPA2107 and OPA2228, all authentic and all purchased from reputable vendors. I will update once the my tubes are burned in and when the additional Op Amps arrive. *Update* As promised, here's the recommendations on pairings. I tried Burson, MUSES, Burr-Brown, and AD Op-Amps. I tried GE Jan tubes, Vokshods and Mullards. I'm going to try to save you money here. Best overall pairing: Burr Brown AD8066 Op-Amp (you'll need to buy one that is already ready to drop in DIP-8. If you search you will find for about $8). Use this with the Mullard M8100 CV4010 5654. You will not have to change jumpers to use this. Outstanding width, depth, bass and vocal. By far and away the best sound I achieved out of this amp. Best for bassier or warmer headphones. Closed backs or those who have more narrow music preferences. Burr Brown OPA2107 (I recommend a legit channel here, about $20). Pair this with the GE JAN 5654W tubes. You can find them on Amazon but I feel like the price is getting a bit outrageous. They were $25.79 when I bought hem and now they have skyrocketed to $35. IMHO these are by far the best two pairings. I'd recommend you try one and if you like it you'll know that the other pairing is also a great option for you. The Vokshods, while good tubes, didn't do anything better with any of the Op-Amps I tried it with vs the other tubes. Best of luck!

### ⭐⭐⭐⭐⭐ Get this amp.
*by C***S on August 20, 2016*

I had my eye on this amplifier for a very long time, and I finally purchased one, along with a set of Voshkod 6ZH1P-ev tubes and an LM4562 OP-amp. On arrival it is neatly packaged, the tubes are separately encased in foam and detached from the physical unit, it comes with a power cord and that is about it. Right out of the box, even with the supplied tubes, it sounded fantastic and the longer it ran, the better it sounded. I added the Voshkod tubes and the LM4562 and the sound came alive, incredible. This was using a set of ATH-m50x headphones. The unit does get very warm to touch but who cares because the tubes glow, and that trumps everything. I am using this unit as both a headphone amp, and a pre-amp for my solid-state amp which drives my speakers. As a pre-amp this unit is excellent and handles it like a champion while sounding fantastic. Pros: -Amazing sound, small package -Works great with my ATH-m50x's -Endless combinations of tubes and OP-amps to roll -Cheap for what you get Cons: -Gets pretty warm -Gain is not easily adjusted -OP-amp rolling involved disassembling the cover -Uses 2-channel OP-amps only, but can be converted to accept 2 1-channels I am not sure how this sounds with headphones other than a set of ATH-m50x's and AKG K240's, but with these two it sounds amazing, it makes sound come alive, its warm and filling in all ranges. I would recommend a DAC be used with this, I convert optical to analog via DAC. Get this amp.

## Frequently Bought Together

- Little Dot I+ 6JI X2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (LDI+)
- Sennheiser Consumer Audio HD 650 - Audiophile Hi-Res Open Back Dynamic Headphone, Titan
- Qudelix-5K Bluetooth USB DAC AMP with LDAC, aptX Adaptive, aptX HD, AAC (Dual ES9219 3.5mm Unbalanced & 2.5mm Balanced Output)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-24*