Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface vs Universal Audio Apollo Solo Heritage Edition, APLS-HE
Updated August 2026 — Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface wins on price and inputs/outputs, Universal Audio Apollo Solo Heritage Edition, APLS-HE wins on audio quality and software.
The Focusrite Scarlett 4i4 offers great value and versatility for beginners, while the Universal Audio Apollo Solo excels in audio quality and professional features.
Why Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface is better
Price
Scarlett 4i4 is $319.99, significantly cheaper than Apollo Solo at $599.00.
User-Friendly
Scarlett 4i4 features Auto Gain and Clip Safe for easier use.
Connectivity
Scarlett 4i4 has more input/output options for versatile recording.
Why Universal Audio Apollo Solo Heritage Edition, APLS-HE is better
Audio Quality
Apollo Solo offers superior audio fidelity with UAD processing.
Plug-ins
Apollo Solo includes a premium suite of UAD plug-ins worth over $1,300.
Support
Apollo Solo provides industry-leading technical support.
Overall score
Specifications
| Spec | Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface | Universal Audio Apollo Solo Heritage Edition, APLS-HE |
|---|---|---|
| Dynamic Range | 120 dB | Not specified |
| Mic Preamps | 2 Scarlett 4th Gen | 2 Unison |
| Processing | Basic | UAD SOLO Core |
| Included Software | Pro Tools Artist, Ableton Live Lite | 5 UAD Plug-ins |
| Connection Type | USB-C | Thunderbolt 3 |
Dimension comparison
Overview of the Focusrite Scarlett 4i4 and Universal Audio Apollo Solo
The Focusrite Scarlett 4i4 is priced at $319.99, while the Universal Audio Apollo Solo Heritage Edition costs $599.00, making the Scarlett about 47% cheaper. Both interfaces target musicians and creators, but they cater to different needs and preferences in audio recording. The Focusrite is designed for users who require a versatile, user-friendly interface for recording, podcasting, and streaming, while the Apollo Solo offers high-end audio quality with additional features appealing to professional environments.
Audio Quality and Performance
The Focusrite Scarlett 4i4 boasts a dynamic range of 120 dB, comparable to what you would find in professional studios. This model features ultra-low-noise mic preamps with a gain of up to 69 dB, ensuring clear and high-fidelity recordings. In contrast, the Universal Audio Apollo Solo excels with its UAD SOLO Core Processing, allowing users to track with vintage compressors and EQs in real-time with near-zero latency. Both interfaces provide studio-quality sound, but the Apollo Solo's advanced processing capabilities may be more suited for those who demand the highest audio fidelity.
Input and Output Options
The Focusrite Scarlett 4i4 offers a robust array of inputs and outputs, including two Scarlett 4th Gen mic preamps, two Hi-Z instrument inputs, four line inputs, and four line outputs, along with MIDI I/O. In total, this gives users a comprehensive setup for recording multiple sources simultaneously. The Apollo Solo, while having fewer inputs and outputs, features two Unison mic preamps, which emulate renowned preamps from brands like Neve and API. For users who prioritize versatility and extensive connections, the Scarlett 4i4 has a clear advantage, while the Apollo Solo focuses on high-quality input emulation.
Software Bundles and Compatibility
When it comes to software, the Focusrite Scarlett 4i4 comes with a complete recording toolkit that includes Pro Tools Artist, Ableton Live Lite, and the Hitmaker Expansion software bundle. This inclusion makes it an appealing choice for beginners and seasoned users alike, as it provides essential tools for music production. On the other hand, the Universal Audio Apollo Solo Heritage Edition includes a premium suite of five award-winning UAD plug-ins worth over $1,300. This software package is tailored for those who want to enhance their recordings with professional-grade effects, making it ideal for users already familiar with UAD technology.
Ease of Use
The Focusrite Scarlett 4i4 is designed with user-friendliness in mind, featuring an Auto Gain mode that automatically sets the optimal recording levels and a Clip Safe mode to prevent signal clipping. This makes it an excellent choice for those who may be new to audio recording or prefer a plug-and-play experience. The Apollo Solo, while also user-friendly, requires a bit more technical knowledge, especially in utilizing its UAD plug-ins and advanced settings. Therefore, the Scarlett 4i4 is likely to be more appealing to beginners, while the Apollo Solo will attract those willing to invest time in mastering its capabilities.
Portability and Design
Weighing in on portability, the Focusrite Scarlett 4i4 is designed for musicians and creators on the go. It connects via USB-C, making it easy to set up with laptops and desktops, and it can run in standalone mode without a computer. The Universal Audio Apollo Solo, also bus-powered and compact, is designed for Thunderbolt 3 connections, which can limit compatibility with some systems but offers high-speed performance. Both devices are portable, but the Scarlett 4i4's flexibility in operating without a computer gives it an edge for live performances or mobile setups.
Customer Support and Community
The Universal Audio Apollo Solo Heritage Edition stands out with its industry-leading technical support, available both online and via phone from knowledgeable audio engineers. This level of support can be invaluable for professional users who may need assistance with advanced features. The Focusrite Scarlett 4i4, while also offering decent customer support, is not specifically highlighted for its level of service. For users who prioritize support and community engagement, the Apollo Solo may be the better option.
Which should you buy?
Choosing between the Focusrite Scarlett 4i4 and the Universal Audio Apollo Solo Heritage Edition ultimately depends on your specific needs and budget. If you are looking for a cost-effective, versatile interface that excels in ease of use and connectivity options for recording, the Scarlett 4i4 is an excellent choice at $319.99. However, if you are a professional or an advanced user seeking high-end audio quality with premium plug-ins and don't mind spending $599.00, the Apollo Solo is likely to meet your demands. Each interface has its strengths, making them suitable for different types of users in the audio recording landscape.

