
S1-1921 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $1795.00 | Condition is Used, HRS S1-1921 (RD Red) Audio Isolation Base (Harmonic Resolution Systems) -Black, shipping cost = $99.99 | 100.0% |
![]() | $1795.00 | Condition is Used, HRS S1-1921 (RD Red) Audio Isolation Base (Harmonic Resolution Systems) - Black, shipping cost = $99.99 | 100.0% |
![]() | $1795.00 | Condition is Used, HRS S1-1921 (GR Green) Audio Isolation Base (Harmonic Resolution Systems) -Black, shipping cost = $99.99 | 100.0% |

The HRS S1-1921 Harmonic Resolution Isolation Base is a high-performance vibration isolation system designed to reduce unwanted mechanical vibrations and improve the sonic performance of audio equipment. This base employs a three-stage isolation design, which includes a primary, secondary, and tertiary isolation stage.
The primary isolation stage consists of a large mass concrete base that absorbs and dissipates low frequency vibrations, while the secondary stage features a unique Sorbothane material that isolates mid-range frequencies. The tertiary isolation stage utilizes HRS's proprietary outboard isolation feet, which minimize micro-vibrations and provide precise isolation for the equipment.
This isolation base is suitable for a wide range of audio components, from preamplifiers and power amplifiers to turntables and CD players. It is capable of supporting components weighing up to 45 lb (20.4 kg), making it a versatile solution for many audio systems.
The HRS S1-1921 Harmonic Resolution Isolation Base is meticulously crafted to provide the highest level of mechanical isolation. Its robust construction, combined with its advanced isolation technology, ensures that your audio components are free from unwanted vibrations and can deliver their best possible sonic performance.
The base features a sleek and modern design, with a black powder-coated finish that complements most audio components. It also has a compact footprint, making it a convenient addition to any audio setup. The base comes fully assembled, so installation is straightforward and hassle-free.
Overall, the HRS S1-1921 Harmonic Resolution Isolation Base is a must-have for audiophiles seeking to optimize their audio systems for the best possible sound quality. Its advanced isolation technology, robust construction, and sleek design make it a valuable investment for any serious audio enthusiast.
The Harmonic Resolution Isolation Base (HRIB) S1-1921, manufactured by Schneider Electric, is a device designed to improve power quality and reduce harmonic distortion in electrical systems. Below are some pros and cons of buying this product:
Pros:1. Improved Power Quality: The HRIB S1-1921 effectively filters out harmonic distortion, ensuring clean power for sensitive electrical equipment, reducing the risk of damage and improving overall system efficiency.
2. Compliance with Harmonic Standards: By reducing harmonic distortion, the HRIB S1-1921 helps ensure compliance with various harmonic standards, such as IEEE 519 and IEC 61000-3-2.
3. Versatility: The HRIB S1-1921 is suitable for a wide range of applications, including industrial, commercial, and residential electrical systems.
4. Easy Installation: The HRIB S1-1921 is designed for easy installation, with a compact and lightweight design that can be mounted on a wall or floor.
5. Robust Construction: The HRIB S1-1921 is built to withstand harsh environments, making it an ideal choice for industrial applications.
Cons:1. Cost: The HRIB S1-1921 is a more expensive solution compared to other power quality improvement devices, such as surge protectors and power conditioners.
2. Size and Weight: Although the HRIB S1-1921 is compact and lightweight compared to other harmonic filters, it still requires some space for installation and may add to the overall weight of the electrical system.
3. Complex Installation: While the HRIB S1-1921 is relatively easy to install, it does require some electrical knowledge and experience to properly connect and commission the device.
4. Maintenance: The HRIB S1-1921 requires periodic maintenance to ensure optimal performance, including checking and replacing capacitor banks and filter elements.
In conclusion, the Harmonic Resolution Isolation Base S1-1921 from Schneider Electric is a highly effective solution for improving power quality and reducing harmonic distortion in electrical systems. While it comes with some disadvantages, such as cost and complex installation, the benefits of improved power quality, compliance with harmonic standards, and versatility make it a worthwhile investment for applications where power quality is critical.
Recommendation:If you operate electrical equipment that is sensitive to harmonic distortion or require compliance with harmonic standards, the HRIB S1-1921 is an excellent choice. It may require a larger upfront investment compared to other power quality improvement devices, but the long-term benefits in terms of improved system efficiency, reduced downtime, and equipment protection make it a worthwhile investment. It is recommended to consult with a qualified electrical engineer or Schneider Electric representative for proper installation and commissioning of the device.
Details:
This means that the weight rating for isolation base is components up to 45 lbs in. Feel free to ask any questions. It comes as shown in the pictures with red vibration isolation feet on it despite green sticker being rear of base. Hrs S1-1921 isolation base, weight rating: red - 45lbs depth: 19 width : 21 height : 3, this isolation base is in great condition and works flawlessly.
I ship items only to buyers with signature required on above $750.
specifications stereocompo:
- brand: Hrs
- mpn: S1-1921
- compatible brand: Universal
- type: Isolation Base
- country of origin: United States
- item weight: 35 Lbs
seller stereocompo:
- # reviews: 1540
- rating: 100.0%
- city: grove city, ohio
offer stereocompo:
- started: january 9, 2026
- availability: in stock
- price: $1795.00
- item condition: Used
- options: ship-to-home
- in stock #: 3
- sold #: 10
shipping stereocompo:
- type: fixed
- service: standard
- transit: 4-7 days
- class: standard
general stereocompo:
- category: Electronics > Audio > Home Stereo Components
returns stereocompo:
- policy: no returns
payments stereocompo:
- wallet: google-pay
- credit card: mastercard
- other


