When examining the high-end electrostatic headphone amplifiers from STAX, specifically the SRM-700T and the SRM-700S, one must delve into the nuances of the technical specifications, sound quality, build quality, and any unique features that set them apart. Both are part of the brand's highly rated range of drivers designed to power our legendary electrostatic earspeakers, offering unparalleled listening experiences for audiophiles and sound connoisseurs.
Technical Specifications:
SRM-700T:
- Type: Vacuum Tube Electrostatic Headphone Amplifier
- Frequency Response: 20Hz to 40kHz (+0, -1.5dB)
- Vacuum Tubes: Equipped with two 6SN7 vacuum tubes in the output stage, offering the characteristic warmth and musicality associated with tube amplification.
- High Voltage: Powers electrostatic headphones with the necessary bias.
SRM-700S:
- Type: Solid State Electrostatic Headphone Amplifier
- Frequency Response: 20Hz to 40kHz (+0, -3.0dB)
- Circuitry: Features a fully solid-state design, utilizing FET (Field-Effect Transistors) in the output stage for precise, detailed audio reproduction.
- High Voltage: Similarly to the 700T, it provides the required bias for electrostatic headphones.
Sound Quality:
SRM-700T: The SRM-700T, with its vacuum tube amplification, introduces a warmth and richness that is often sought after by audiophiles. The tonal balance leans towards a fuller, more lush presentation, especially notable in the midrange frequencies. The slight harmonic distortion introduced by the tubes enriches the listening experience, adding a layer of auditory pleasure that solid-state systems might lack. It excels in delivering spacious soundscapes and a three-dimensional audio experience.
SRM-700S: The SRM-700S, being a solid-state amplifier, delivers a cleaner, more accurate sound. It prides itself on its precision and detail retrieval. The soundstage, while still expansive, offers a more accurate positioning of instruments and vocals. The bass response is tight and well-controlled, and the highs are crystalline without veering into sibilance. For listeners who prioritize accuracy and detail in their music, the SRM-700S is a good choice.
Build Quality:
Both the SRM-700T and SRM-700S exhibit STAX's commitment to high-quality construction. However, the 700T, with its more delicate vacuum tubes, requires careful handling and potentially more maintenance over time than the solid-state 700S. Conversely, the 700S's solid-state design is inherently more durable and reliable for long-term, worry-free use. Both units share a sleek, minimalistic design aesthetic that is both clean and timeless, fitting seamlessly into any high-end audio setup.
Unique Features:
· SRM-700T: Its main unique feature is the utilization of vacuum tubes, which is a rarity among electrostatic headphone amplifiers. This gives it a unique sound signature and makes it a desirable piece for collectors and enthusiasts who cherish the tube sound.
· SRM-700S: The SRM-700S's standout trait is its unfaltering precision and clarity, making it a fitting choice for those who seek to hear their music with utmost detail and without the coloration introduced by tubes.
To conclude, deciding between the SRM-700T and the SRM-700S comes down to personal preference in sound signature and the types of musical experiences you wish to curate. If you are drawn to the warmth, musicality, and three-dimensionality that vacuum tubes can offer, the SRM-700T will be your amplifier of choice. Its ability to render recordings with a lush and engaging soundstage can make for a mesmerizing listening session.
On the other hand, if your priority lies in precise audio reproduction, detail retrieval, and a clean, accurate bass response, the SRM-700S will meet your needs impeccably. It stands as a testament to the clarity and precision that solid-state circuits can provide, making it ideal for the listener who seeks to explore the nuances of their music without coloration.
In either case, both the SRM-700T and SRM-700S are top choices for driving your electrostatic headphones.
Let us know your thoughts on this and drop us a note at enquiry@staxheadphones.com with any questions or feedback.