will this up the line level from my cell phone to my home amps RCA input to play thru my stereo speakers?

Nope, it’s a complete straight pass through, zero power. I love mine, although I do wish the volume knob was a bit larger.

will the switch degrade the sonic? I'm using 10AWG speaker wire, and etc. will this be the weakest section of my audiophile system?

I have huge gear hanging off of this (sunfire) and cannot tell any difference between channels when switching.

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SYS Passive Preamp Volume Control and 2-Input Switch (Black)

SYS Passive Preamp Volume Control and 2-Input Switch (Black)

Product ID: 689842426

Details

Brand
Schiit
Color
Black
Compatible Devices
Monitors
Material
Metal
Model Name
SYS

🔄2-input switch for seamless source toggling

🔇Passive design ensures zero distortion

🇺🇸Proudly designed & assembled in the USA

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HK$2493

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Simplify your sound. Control your vibe.

EFFORTLESS SOURCE SWITCHING - Toggle between two line-level inputs without unplugging a thing.
PURE DISTORTION FREE SOUND - Passive preamp design means your audio stays pristine—no power, no noise.
2 YEAR WARRANTY PEACE OF MIND - Double the standard coverage to keep your audio experience worry-free.
MADE IN THE USA MADE FOR YOU - Support local craftsmanship with components sourced and assembled stateside.
COMPACT DURABLE METAL CHASSIS - Sleek black metal enclosure built to last and complement any setup.

The Schiit SYS is a minimalist 2-input passive preamp and volume control that delivers distortion-free audio by design. It works seamlessly with any line-level source, allowing easy switching and precise volume adjustment without power or electronics. Crafted in the USA with high-quality metal components, it offers durability and a 2-year warranty, making it the perfect companion for audiophiles seeking clean, simple, and reliable audio control.

Specifications

ASIN	B0BCMKH2ZT
Amplifier Type	Passive
Best Sellers Rank	#968,541 in Electronics ( See Top 100 in Electronics ) #76 in Pre-Amplifiers
Box Contents	SYS
Brand	Schiit
Brand Name	Schiit
Colour	Black
Compatible Devices	Monitors
Connector Type	RCA
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 106 Reviews
Enclosure Material	Metal
Manufacturer	Schiit
Manufacturer Part Number	SCH-13B-FA
Material	Metal
Model Name	SYS
Output Channel Quantity	2
Power Source	No power required
Unit Count	1 Count

Reviews

S**E

Très bon produit

17.01.2026

満**様

もう少し質感が欲しい

車のオーディオに使用してます純正や社外品のオーディオ（ヘッドユニット）を使用せずに、ストリーミングオーディオやネットフリックスの音声をアクティブクロスオーバーネットワーク、パワーアンプを経由し、スピーカーから出力するために、アッテネーター兼セレクターとして購入しました。確かにいわゆるプリアンプ的な存在ではありますが、電源レスで1ミリも信号の増幅をしていないのにパッシブという名をつけたところでアンプを名乗っていいのか甚だ疑問ですが、こまけーことを言うタイプの人はたぶん買わない商品なので言いません（言ってる）。アメリカよりDHLで届いたので、為替や送料の影響はあるにせよ、価格に対してもう少し質感が欲しいところです。

22.09.2024

J**G

High Quality, Good Value

18.11.2025

A**P

Works as advertised, well built.

18.08.2025

W**S

It works properly and it's made in the USA by a company who actually cares about audio.

29.12.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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