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TOPPING E2X2 USB Audio Interface - vs Universal Audio Apollo Solo Heritage Edition, APLS-HE

Updated August 2026 — TOPPING E2X2 USB Audio Interface - wins on portability, Universal Audio Apollo Solo Heritage Edition, APLS-HE wins on price and support.

The TOPPING E2X2 offers excellent value for entry-level users, while the Universal Audio Apollo Solo provides advanced features for professionals. Choose based on your budget and needs.

Why TOPPING E2X2 USB Audio Interface - is better

Price

TOPPING E2X2 is significantly cheaper at $159.

Real-Time Monitoring

TOPPING E2X2 features zero-latency monitoring.

Portability

TOPPING E2X2 is more affordable for beginners.

Why Universal Audio Apollo Solo Heritage Edition, APLS-HE is better

Sound Quality

Apollo Solo offers superior sound processing.

Build Quality

Apollo Solo has a premium build and design.

Support

Apollo Solo includes industry-leading technical support.

Overall score

TOPPING E2X2 USB Audio Interface -
75
Universal Audio Apollo Solo Heritage Edition, APLS-HE
88

Specifications

SpecTOPPING E2X2 USB Audio Interface -Universal Audio Apollo Solo Heritage Edition, APLS-HE
Price$159.00$599.00
Mic PreampsUltra-LinearUnison
LatencyZeroNear-Zero
Plug-InsNone5 Award-Winning
Headphone AmpGoodBest-in-Class

Dimension comparison

TOPPING E2X2 USB Audio Interface -Universal Audio Apollo Solo Heritage Edition, APLS-HE

Pricing Comparison

The TOPPING E2X2 USB Audio Interface is significantly more affordable than the Universal Audio Apollo Solo Heritage Edition, priced at $159.00 compared to $599.00. This makes the TOPPING E2X2 about 73% cheaper than its competitor. For budget-conscious consumers, this price difference could be a decisive factor. While both products cater to audio enthusiasts, the TOPPING E2X2 provides high-quality features at a fraction of the cost, making it an attractive option for those just starting in audio production or those who require a reliable interface without breaking the bank.

Features Overview

When it comes to features, the Universal Audio Apollo Solo Heritage Edition offers a premium experience with an impressive suite of five award-winning plug-ins valued at $1,300. This suite includes renowned brands like Teletronix and Pultec, enhancing its appeal for professional users. In contrast, the TOPPING E2X2 focuses on core functionalities such as ultra-linear preamps and real-time monitoring, which are essential for recording and mixing. Both interfaces provide practical tools for audio production, but the Apollo Solo’s additional software suite may justify its higher price for serious musicians and producers.

Build Quality and Design

The Universal Audio Apollo Solo Heritage Edition boasts uncompromising analog design and superior components, making it a standout in terms of build quality. Users can expect a device that combines aesthetics and durability, ideal for both studio settings and on-the-go use. On the other hand, the TOPPING E2X2, while also well-built, emphasizes functionality over form. It is designed with practical features like a powerful headphone amplifier and multiple input channels, providing solid performance for everyday use. Thus, those seeking a premium feel may lean towards the Apollo Solo, while those valuing utility might prefer the E2X2.

Compatibility and Ease of Use

The Universal Audio Apollo Solo is compatible with major DAWs like Logic Pro, Pro Tools, and Ableton Live, making it a versatile choice for professionals who require seamless integration into their existing workflows. It runs UAD Powered Plug-Ins via VST, AU, and AAX formats, ensuring flexibility in production environments. The TOPPING E2X2 also offers compatibility with a range of devices, including PCs, Macs, iPhones, and Androids, but lacks the specialized plug-in suite of the Apollo. For those prioritizing ease of integration with professional software, the Apollo Solo may be the preferred option.

Performance and Sound Quality

The performance and sound quality of both interfaces are commendable, but they cater to different user needs. The TOPPING E2X2 features an ultra-linear preamp with an EIN as low as -130.5 dBu, designed to minimize background noise and ensure clear audio transmission. This makes it an excellent choice for home studios and podcasters looking for high-quality recordings. In contrast, the Apollo Solo offers UAD SOLO Core Processing, allowing users to track through vintage compressors and mic preamps with near-zero latency. This feature is particularly beneficial for professionals seeking authentic sound while recording. Thus, the choice between the two may depend on whether one prioritizes ultra-clean recordings or rich, processed sounds.

Monitoring and Mixing Capabilities

Monitoring capabilities differ between the two products, with the TOPPING E2X2 featuring a zero-latency hardware monitoring system. This allows users to monitor their audio effects in real-time, which is crucial for recording and mixing tasks. It also includes multiple mixer channels for versatile audio management. The Apollo Solo, on the other hand, is equipped with a best-in-class headphone amplifier designed for detailed and low-noise monitoring. While both provide effective monitoring solutions, the choice may hinge on whether you value real-time oversight or superior headphone performance during audio work.

Customer Support and Service

When it comes to customer support, the Universal Audio Apollo Solo Heritage Edition stands out by offering free, industry-leading technical support from knowledgeable audio engineers. This can be particularly advantageous for users who might need assistance with complex setups or troubleshooting. The TOPPING E2X2 does not highlight any specific customer support options, which may leave users to rely on online resources. For those who prioritize robust support and guidance, the Apollo Solo provides an edge in this category, enhancing its value for professional users.

Which should you buy?

Deciding between the TOPPING E2X2 and the Universal Audio Apollo Solo Heritage Edition ultimately depends on your specific needs and budget. If you are an entry-level user or a podcaster looking for an affordable, high-quality interface, the TOPPING E2X2, priced at $159.00, offers excellent functionality without the hefty investment. Alternatively, if you are a professional seeking advanced features, premium sound processing capabilities, and comprehensive support, the Apollo Solo, while significantly more expensive at $599.00, provides a richer suite of tools and resources. Each product has its strengths, making the choice a reflection of your individual audio production requirements.