# Headphone Amplifier Mozos HA400 — 4-channel stereo headphone amp, compact desktop unit

**URL:** https://aio.lv/en/product--mozos-ha400--12017464
**Data updated:** 2026-03-11 20:52 (EET)
**Category:** AV Receivers & Amplifiers
**Manufacturer:** Mozos
**Manufacturer code:** HA400
**EAN:** 5903738185917
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 19.00 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mozos-ha400--12017464

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Mozos HA400 is a 4-channel stereo headphone amplifier designed to drive up to four pairs of headphones from a single source. The compact desktop unit provides independent headphone outputs for monitoring, rehearsals, small studios, or personal listening where multiple listeners need the same audio feed. It is suitable for simple distribution and level control of stereo signals without complex routing.

## Long description

Mozos HA400 is a compact desktop 4-channel stereo headphone amplifier that allows a single stereo source to feed up to four independent headphone outputs. The unit is designed for straightforward distribution and level control of stereo signals without complex routing, making it suitable for monitoring, rehearsals, small project studios, classroom listening, or any setting where several listeners require the same audio feed. The physical layout and controls prioritize simple setup and reliable, low-noise operation for personal and small-group use.
Advantages
The device provides four independently adjustable stereo headphone outputs so each listener can set their preferred level while maintaining the same stereo source. Its compact desktop form factor conserves workspace and is easy to position near a mixer, audio interface, or media player. The straightforward signal path reduces the risk of latency or signal degradation, and the design focuses on dependable, low-noise amplification appropriate for passive and many active headphones. The front-panel controls and clear channel separation simplify operation for users with minimal technical experience.
Suitable for
Home or project studios for musician monitoring
Band rehearsals and practice sessions
Small classroom or training environments for shared listening
Podcast or live-stream setups where multiple hosts/guests require the same feed
Personal listening where several headphones are needed from one source
Key specifications
Number of headphone outputs: 4 stereo channels
Form factor: compact desktop unit designed for proximity to source devices
Control: independent level control for each headphone output
Signal path: stereo input duplicated to multiple outputs with level adjustment
Compatibility: designed to drive a range of headphones; suitable for both passive and many active models
Typical use: monitoring, rehearsals, small-group listening and distribution of stereo audio
How to use
Connect a stereo source such as a mixer, audio interface, computer, or media player to the unit's stereo input using the appropriate cables. Plug headphones into any of the four front-panel outputs and adjust each channel's level control to achieve the desired listening volume for each person. Keep source levels at a nominal level to avoid clipping; reduce individual headphone gain if distortion or excessive loudness occurs. The unit is intended for desktop use and requires stable placement to prevent cable strain or accidental disconnection.
Usage recommendations
For consistent audio quality, use shielded cables between the source and the amplifier and set the source output to a moderate level before fine-tuning individual headphone gains. When using high-impedance headphones, increase level gradually; with very sensitive in-ear monitors or low-impedance headphones, start with low gain to avoid high volume. Maintain ventilation clearance around the unit and disconnect power before cleaning or when changing cabling in professional setups.

## FAQ

### How much does the Mozos HA400 4-Channel Headphone Amplifier cost, and is it available for purchase?

The price is 22.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 201 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Mozos products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Mozos service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12017464/67506026_large.webp