Need help?Do you have a question about the SMSL SA400 and is the answer not in the manual?
Explains the device's main display elements and indications for input selection, volume, and status.
Details how to select different audio input sources like Balanced, Unbalanced, and Bluetooth.
Lists and explains the various EQ modes available, including Direct, Tabebuia, Tone, SDB, Bass, Super Bass, Rock, Soft, and Clear.
This document provides a comprehensive guide for the S.M.S.L SAYO, a high-resolution power amplifier designed for audio enthusiasts. It covers safety notes, key features, operational instructions, and warranty information, ensuring users can maximize their experience with the device.
The S.M.S.L SAYO is a powerful and versatile audio amplifier engineered to deliver high-fidelity sound. At its core, it utilizes two sta516be digital power amplifier chips, providing a robust output of 230W per channel at 4 ohms, or 110W per channel at 8 ohms. This significant power output ensures that the SAYO can effortlessly drive a wide range of speakers, from demanding floor-standing units to more compact bookshelf models, without compromising on sound quality or dynamic range.
A key component in its audio processing chain is the NJRC's electronic volume control chip NJW1195, sourced from Japan. This advanced chip is responsible for precise volume adjustment, minimizing distortion and preserving the integrity of the audio signal across all volume levels. This meticulous attention to volume control ensures a clean and accurate sound reproduction, allowing listeners to experience their music as intended.
Beyond its primary amplification capabilities, the SAYO offers extensive connectivity and sound customization options. It features a super bass preamp output, specifically designed for connecting active subwoofers. This allows users to configure a 2.1 audio system, enhancing the low-frequency response and adding depth to their soundstage. The bass adjustment range for this output is flexible, spanning from -30dB to +10dB, enabling fine-tuning to match individual preferences and room acoustics.
The amplifier also incorporates a Qualcomm Bluetooth 5.0 receiver, supporting the aptX codec. This advanced Bluetooth implementation ensures high-quality wireless audio streaming with improved sound fidelity and an extended transmission distance, providing convenience without sacrificing audio performance.
For users who enjoy tailoring their sound, the SAYO includes built-in multiple EQ modes. These modes, combined with adjustable treble and bass settings, allow for easy matching with various types of speakers and musical genres. Whether you prefer a flat, uncolored sound or a more emphasized bass or treble, the SAYO provides the tools to customize your listening experience.
Operating the S.M.S.L SAYO is designed to be intuitive and user-friendly, facilitated by both front panel controls and a full-function remote control.
The main unit features a multi-function knob, a clear color LCD screen, and a remote window. The multi-function knob serves as the primary interface for navigating menus and adjusting settings directly on the device. The color LCD screen displays essential information such as input selection, volume level, and input status (including a red indicator when muted), providing clear visual feedback to the user.
The newly developed user interface, displayed on the color LCD screen, offers an organized menu structure with eight pages of settings. These settings include:
The remote control significantly enhances usability, allowing for convenient operation from a distance. It requires two AAA batteries and should be pointed towards the remote control signal receiver on the main unit, ideally within 5 meters (16 feet) and without obstructions. The remote includes dedicated buttons for power ON/OFF, mute, volume up/down, menu navigation, switch function, Bluetooth control, input selection, and a specific key (A) to control the SA400 when first operating it.
Bluetooth operation is straightforward. A short press of the Bluetooth button (FN) on the remote or selecting Bluetooth input via the SETTING MENU will switch to Bluetooth input. If the connection is lost, a short press will attempt to reconnect. For pairing with a new device, a long press of the Bluetooth button will disconnect the current device and enable pairing mode. To connect, users simply turn on Bluetooth on their mobile phone, search for "SMSL BT5.0D," and tap to pair. If a device cannot find "SMSL BT5.0D" after clearing pairing, users may need to delete the device from their phone's saved Bluetooth list and search again.
The SAYO offers versatile input options, including XLR, RCA, and Bluetooth, catering to various audio sources. Output terminals are high-quality gold-plated, ensuring reliable and optimal signal transfer to speakers. The rear panel clearly labels inputs for XLR (Left and Right), Line In (RCA Left and Right), SW OUT, and outputs for Right and Left speakers, along with the Bluetooth antenna connection and power input.
The S.M.S.L SAYO is built with durability and protection in mind, incorporating several features to ensure its longevity and reliable performance.
The device features an all-aluminum alloy CNC precision-processed shell. This robust construction not only provides excellent protection for the internal components but also contributes to the unit's aesthetic appeal with its anodizing technology and chamfering process, resulting in an exquisite workmanship and a delicate touch.
For internal protection, the SAYO includes a perfect protection circuit designed to guard against overheating and overcurrent. These safeguards prevent damage to the amplifier and connected speakers in the event of abnormal operating conditions, ensuring long-term reliability.
The power supply is specifically designed for audio applications, indicating a focus on stable and clean power delivery, which is crucial for high-fidelity sound reproduction.
In terms of user maintenance, the device is designed for safe use only under elevations of 2000m. Users are cautioned against removing the cover or back of the unit to reduce the risk of electric shock. The lightning flash symbol with an arrowhead within an equilateral triangle warns of uninsulated "dangerous voltage" inside, while the exclamation point within an equilateral triangle indicates important operating and maintenance instructions in the accompanying literature.
The warranty terms outline the conditions for service and repair. Foshan Shuangmusanlin Technology Co., Ltd offers good-quality products, with a 7-day return, replacement, or repair policy for products broken under normal use, provided the product does not affect second sales. Free repair is offered for one year under normal use. The purchase date is determined by the invoice or receipt, or a screenshot of the online trade. The warranty is void if damage is caused by inappropriate usage, including use in non-normal environments, not following instructions, dismantling or repairing by the user, or using non-designated fittings. Users are advised to contact their S.M.S.L Audio reseller for returns or replacements.
A factory reset function is available: by connecting the power cord while pressing the power button, the unit will display its logo, indicating a successful reset. This can be useful for troubleshooting or restoring default settings.
Overall, the S.M.S.L SAYO is designed to be a robust, high-performance, and user-friendly audio amplifier, with comprehensive features for both sound quality and operational convenience, backed by protective measures and clear maintenance guidelines.
General| Output Impedance (Headphone) | < 1Ω |
|---|---|
| Standby Power | < 0.5W |
| SNR | > 100dB |
| Input | RCA, USB |
| Output | 6.35mm headphone jack |
| Input Impedance | 47kΩ |
| Damping Factor | >200 |
| Frequency Response | 20Hz - 20kHz |
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