Marantz MODEL30/U1B Integrated Amplifier - Black — main product image

Marantz MODEL30/U1B Integrated Amplifier - Black

Marantz

Marantz MODEL30/U1B Integrated Amplifier - Black

Name: Marantz MODEL30/U1B Integrated Amplifier - Black
Brand: Marantz
SKU: MODEL30/U1B

★★★★★3.8 (10 reviews)

5 Hz - 50kHz

The Marantz Model 30 delivers 100W per channel of fully discrete, audiophile-grade amplification with a built-in MM/MC phono stage.

$3,500.00*

✓ In Stock on Amazon.com

View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Marantz Model 30 is a fully discrete integrated amplifier that represents the brand's commitment to analog signal purity and meticulous engineering. At its core is the proprietary HDAM-SA3 (Hyper Dynamic Amplifier Module) circuit topology, which replaces standard operational amplifiers with hand-selected discrete components arranged for minimal noise and maximum musicality. The two-stage design outputs 100 watts per channel into 8-ohm loads and confidently doubles to 200 watts into 4-ohm speakers, giving it the current reserves to drive a broad range of loudspeakers without strain or compression.

What sets the Model 30 apart from many modern integrated amplifiers is its focus on analog signal integrity throughout. Separate premium power supplies isolate the preamplifier and amplifier stages, with a large toroidal transformer dedicated to the preamp section to keep noise and interference at bay. The built-in phono EQ supports both MM and MC cartridges, making it a natural companion for turntable-based systems without needing an external phono stage. With a frequency response stretching from 5 Hz to 50 kHz, the Model 30 captures the full range of musical detail. Its sleek black chassis at 17.4 by 16.7 by 5.1 inches fits gracefully into any audio rack while signaling the serious engineering within.

Key Features

Channels: 2

Frequency Response: 5 Hz - 50kHz

Power Output (8 / 4 Ohm RMS): 100 W / 200 W

Power Consumption: 130 W

Dimensions (WDH): 17.4" x 16.7" x 5.1"

Specifications

Brand

Marantz

Model

MODEL30/U1B

Channels

Power Output (8 Ohms)

100W per channel

Power Output (4 Ohms)

200W per channel

Frequency Response

5 Hz – 50 kHz

Amplifier Design

Fully Discrete, Two-Stage (HDAM-SA3)

Phono EQ

MM / MC

Power Consumption

130W

Transformer

Large Toroidal (Preamplifier)

Power Supplies

Separate for Amplifier and Preamplifier

Dimensions (W x D x H)

17.4" x 16.7" x 5.1"

Color

Black

Pros & Cons

👍 Pros

Fully discrete two-stage amplifier design using Marantz HDAM-SA3 modules delivers exceptionally clean, detailed sound
Doubles output power from 100W to 200W when driving 4-ohm speakers, handling a wide range of loudspeakers with ease
Built-in MM/MC phono stage eliminates the need for a separate phono preamp for vinyl playback
Separate power supplies for the preamp and amplifier sections reduce crosstalk and noise between stages
Compact 17.4-inch width fits standard audio furniture while maintaining premium build quality

👎 Cons

Two-channel stereo only with no surround sound or multi-room capability for home theater use
No built-in streaming, Bluetooth, or digital inputs means you need a separate source component for digital audio
At 130W power consumption it draws meaningful energy even at modest listening levels
Premium pricing places it firmly in the audiophile market, beyond reach for casual listeners

Frequently Asked Questions

Does the Marantz Model 30 have a built-in phono preamp for turntables?

Yes, it includes a high-quality phono EQ stage that supports both Moving Magnet (MM) and Moving Coil (MC) cartridges, so you can connect a turntable directly without an external phono preamp.

What is Marantz HDAM-SA3 technology?

HDAM-SA3 (Hyper Dynamic Amplifier Module) is Marantz's proprietary discrete circuit design that replaces conventional op-amps with carefully selected individual components for lower noise and more refined sound reproduction.

Can the Model 30 drive lower-impedance speakers?

Yes, it delivers 100W per channel into 8-ohm speakers and doubles to 200W per channel into 4-ohm speakers, indicating strong current delivery for demanding loudspeakers.

Does the Model 30 have a separate preamp and power amp power supply?

Yes, it uses separate premium power supplies for the preamplifier and amplifier sections, including a large toroidal transformer for the preamp stage, to minimize interference between stages.