the t.amp S-150 MK II

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Power amplifier

2 x 150 W at 4 ohms
2 x 85 W at 8 ohms
Balanced inputs with XLR and jack
Bridgeable
Speaker Twist and binding post outputs for LS Out
All protection circuits including Softstart
Switchable input sensitivity of 0.775 Vrms to 1.4 Vrms, or can be switched to 26 dB Gain
Damping factor > 150
Convection cooled (no fan)
19", 2U, depth 32 cm (without handles)
Weight 11.5 kg

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3-Year Thomann Warranty

Available since January 2000

Item number 141141

Sales Unit 1 piece(s)

Power (4 Ohms) per Channel 150 W

Channels 2

Rack Units 2 U

Amp Class Class AB

2 Ohm stable No

DSP/Crossover No

Convection cooling Yes

Width in mm 483 mm

Depth in mm 320 mm

Height in mm 88 mm

Weight 11,5 kg

Bridged Mode 1

Input XLR 1

Jack Input 6,3 sym. 1

Parallel Input 1

Link Out No

Output Speaker Twist 1

Output Binding Post 1

2.333 kr

Including VAT; Excluding kr200 shipping

Sales Rank

in Power Amps

Precise and linear

The S-150 MK II is a high-quality two-channel power amplifier that sets the standard for systems in this price range. Developed by Thomann’s in-house brand, the t.amp, the S-150 MK II’s linear frequency response, low self-noise and distortion, and generous power output will doubtless have sound enthusiasts sitting up and taking notice. Since the amplifier is convection-cooled (meaning no noisy fan is installed), it runs silently too. The S-150 MK II provides plenty of flexibility and connectivity for input/output configurations, including a handy “input sensitivity” switch, which, among other things, allows several amps to be combined to the same output level.

Connnections on the the t.amp S-150 MK II Power amplifier

Versatile and functional

The S-150 MK II is class AB amplifier with built-in limiters. Its maximum output is 250W (in “bridge mode”, at 8 ohms) with a damping factor of over 150dB. As previously mentioned, it features a quiet convection-cooling system. The rear connection panel offers a choice of balanced 6.35mm jack or XLR inputs, and “Speaker Twist” or binding outputs. The “input sensitivity” selector allows users to switch between 0.77V/RMS and 1.4V/RMS, while the 26dB setting matches the output levels of each amp when they are combined. The S-150 MK II is a 2RU rack-mountable unit (measuring 483×320×88mm) and weighs a reassuring 11.5kg. It features three operating modes – “Stereo” and “Parallel”, which operate at 2x85W at 8 ohms and 2x150W at 4 ohms, and “Bridge” mode, which allows the user to double the input channels to a single output and provides 250W of power at an impedance of 8 ohms.

controls on the the t.amp S-150 MK II Power amplifier

For monitoring and listening

The S-150 MK II’s linear and “unadulterated” sound makes it a good candidate for passive monitoring systems in the studio (the silent heat sink will be appreciated here, and the variety of inputs and outputs are all of professional quality). Hi-fi enthusiasts looking to “level up” should also be looking at this amplifier (with adapted speakers of course). If the amp has to be placed in an inconvenient or out-of-reach location, whether for practical or esthetical reasons, a handy ERP switch automatically puts the amplifier in standby mode after 20 minutes of inactivity.

About the t.amp

the t.amp is one of the many in-house brands belonging to Musikhaus Thomann, and since 1998 has offered power amplifiers, complete passive PA sets, keyboard amplifiers, and connection systems. The brand’s entire product range delivers an impressive combination of quality and reliability at attractive prices, and users can find a convincing and affordable solution for every application: From youth clubs and sports halls through to congress centres and much more.

Installation and connection made easy

The S-150 MK II can simply be stood on its rubber feet, or, alternatively, it can be mounted in a 19" rack, which of course provides the best protection. In this case, it is advisable to leave a 1RU space free above the amp in order to ensure good airflow. All the inputs and outputs are at the back of the amplifier. As mentioned previously, the S-150 MK II has three operating modes. In Stereo mode, both channels remain independent, and the outputs can be individually controlled; in Parallel mode, the two input channels receive the same signal on channel 1 and both outputs are controlled by channel 1; finally, in Bridge mode, the two input channels are connected so that the output is doubled. Only the input on channel 1 is amplified and the output volume is also controlled on channel 1.

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the t.amp S-100 MK II

221 Customer ratings

5 141 Customers 4 62 Customers 3 11 Customers 2 4 Customers 1 3 Customers

4.5 / 5

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137 Reviews

Heavy and quality!

Hrks 06.09.2024

It's a great amp gor HiFi speakers, I use it to drive a pair of Elac DBR62 and it works superbly. It doesn't even break a sweat, at almost full power it drains maybe 2-3 green lines from the bottom. Loads of power. I like it better than the Behringer A800 which I also have. I know it's not fair to compare a class D vs AB amp, but I'll do it just the same. :)

The A800 is more precise for sure but the s150 is more musical, full of midrange, and much more power. You can listen to it for longer. A800 has the highs more pronounced and is more analytical, the 150 is warmer. Peraonally I would go for the s150 any time. It also has much more headroom than the A800 does.

Protection relay works very good.
It's very very heavy at 12 kg. I have no complaints, i will probably try the s-75 next.

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Nice and clear sound for my tweeters and horn

marocv 23.12.2020

This one might be slightly too powerful for my tweeter and horn passive speakers. I am sending one channel to tweeter and one channel to horn, and have to be careful not sending too much power there. Sounds really clear even at high volume, voices and plates fill up the room nicely and can come above my bass section nicely.

It was really hard to put it into my rack - it's really heavy: get a friend to hold it from the back while you put in the screws

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Pergola use

manavees 09.01.2021

paired it with 4 x mask4c speakers into 4 ohm and i think it is a great combnation for my needs. As always thomann support and suggestions are the best!

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The balance of the indicator is bad

Eucalyptus panda 16.04.2023

The left sound is small ...。In addition, the low tone does not have any problem from a very splendid high-pitched tone and thinks that quietness, sometimes strong power are not stimulating and are the good sound quality of the article, and there is sometimes it to a Japanese very much.

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the t.amp S-150 MK II

Power amplifier