ClickCease
 

STAX at Audio46


1 year warranty

STAX - SRM-400S Electrostatic Headphone Amplifier


Important Notice:
• All STAX returns have a 10% restocking fee


Regular price $1,299.00 Sale Save $-1,299.00 (Liquid error (sections/product-template line 206): divided by 0% OFF)
before taxes, if applicable

Earn up to 6495 points in rewards. Learn more.

Found a better price?
We can match it

Financing options


Product SKU: SRM-400S

Email me when available

Email me when this product is in stock again

(Fun fact: By filling out this form, you let us know there's demand for this item!)

We will only send you a follow-up email once the product becomes available. Your email address will not be shared with anyone else.

We are an Authorized U.S. Dealer

Order in the next for shipping today.
Receive FREE U.S. shipping with estimated delivery
between Mon, Apr 03 and Tue, Apr 04
Order now for shipping tomorrow.
Receive FREE U.S. shipping with estimated delivery
between Tue, Apr 04 and Wed, Apr 05

Ⓧ Not available for shipping outside the U.S.

General 30 Day Return/Exchange Policy with a Fee
Available Online and In Store

Need help or product is sold out? Call (212) 354-6424, Chat or Email us

Product Details from the Brand

Any mention of "us," "we," "our," etc is by STAX, not Audio46

Middle-class semiconductor driver unit is renewed.

New DC amplifier which FET are installed in all stages.

STAX introduces a new semiconductor driver unit SRM-400S, the successor model of SRM-353X. STAX custom-made low noise DUAL FET is installed on First Stage. And FET is also installed on Last Stage. The characteristics of right FET and left FET are measured strictly. Selected FET are installed as well as SRM-700S. SRM-400S succeeds to the design and the manufacturing method of the high end model SRM-700S, the amplifier which FET are installed in all stages.

In addition to the conventional power transformer for the high voltage circuit, the newly designed power transformer with the winding for the low voltage circuit is installed in SRM-400S. The low voltage winding enables to improve the power efficiency and achieve further power saving and better sound quality than the conventional driver units such as SRM-353X.

The new chassis which is more rigid than the conventional model is installed. The chassis has a hybrid structure using a lot of non-magnetic aluminum and further reduces the effect of the environmental noise factors such as vibrations. The inputs are RCA and XLR, the mutual exclusion inputs. The custom made concentric dual volume knob which is common to STAX products and RCA PARALLEL OUT functions are installed same as the conventional driver units. All electric components are strictly selected considering the environment. Also the sound quality and the performance is improved. The complete DC amplifier configuration that the signal circuit includes no coupling condensers is one of the biggest traditional features.

SRM-400S takes over the high resolution sound which is unique to the semiconductor circuit and dynamic low range sound reproduction. Simultaneously, the good sound balance is further pursued than SRM-353X. From the low range to the high range, the sound of each range is well harmonized. Not only for the combination with the advanced lambda series, SRM-400S is also ideal for the upgrading from the entry level SRS-3100. This is the promising new model which covers from beginners to intermediates among the renewed driver unit lineup.

Specification

  • Type: All-stage FET configuration DC amplification driver unit
  • Frequency response: DC – 90kHz (with one SR-L500 MK2)
  • Gain: 60dB
  • Harmonic distortion: 0.01% or less (1kHz/100Vrms output)
  • Input impedance: 50kΩ (RCA), 50kΩx 2 (XLR)
  • Maximum output voltage: 400Vrms (1kHz)
  • Bias voltage: DC 580V
  • Operating temperature / humidity: 0 to 35 degrees C / less than 90% (non condensing)
  • Input terminal: RCA x 1, XLR x 1(mutual exclusion input)
  • Output: RCA parallel output terminal
  • Power consumption: 30W
  • Power Supply: 120 V / 50-60Hz
  • Dimension: 195 (W) x 102 (H) x 376 (D) mm (maximum protruding portion included)
  • Weight: 3.4kg

Product Reviews

Loading...

Your cart

(Checkout includes Audio46 Pay and Affirm financing)

--OR--

Go through checkout faster with our Express Checkout options: