McIntosh D150 Stereo digital preamplifier * Remote * Original Box

McIntosh D150 Stereo digital preamplifier * Remote * Original Box

McIntosh

Regular price $1,750.00 USD
Sale price $1,750.00 USD Regular price
Sale Sold out

About the McIntosh D150
A stereo preamp with a digital mind and an analog soul


Even audio components that focus on digital audio, like the McIntosh D150 preamplifier, owe a big part of their sound quality to analog circuitry. And nobody has more experience with high-performance analog design than McIntosh. The D150 brings world-renowned McIntosh sound quality to the latest high-res digital audio formats.

Along with its sonic attributes, the D150 boasts the classic McIntosh look — black glass front panel, big metal knobs, and illuminated logo. And this gorgeous preamp is designed and built right here in the USA.

Hear what you've been missing from high-res digital files

McIntosh D150 back panel

With 6 audio inputs, the D150 is a versatile digital preamp. Or, you can use it as a high-performance DAC.

An array of inputs give you access to the D150's advanced digital-to-analog converter (DAC). This is an 8-channel DAC chip configured to operate with four channels per stereo channel. All that processing power will provide a revelatory improvement to the sound from your computer, disc player, music streamer, or TV.

The D150's optical and coaxial digital inputs support high-res music files up to 24-bit/192kHz. And its USB input handles even higher-resolution files: up to 32-bit/384kHz for PCM, as well as DSD and DXD formats.

And speaking of DSD, the D150 is one of only a handful of components with a digital DSD input. It means that you can play SACD discs on the McIntosh MCT500 SACD/CD Transport and send the DSD bitstream to the D150's superb DAC for decoding.

A preamp/DAC you can use as a preamp... or a DAC

McIntosh D150 front panel profile view

If your music system is built around digital sources, the D150 is probably all the preamp you need. Just connect the D150's variable-level outputs to your amplifier and you're good to go. You'll use the D150's remote to control volume and other functions, just as you'd expect. But if you also listen to analog sources, and already have a preamp or A/V pre/pro you like, you can still take advantage of the D150's superb DAC section. Connect all your digital music sources to the D150, then use its fixed-level outputs to connect to your preamp. In that situation, volume level is controlled via your preamp.

A world-famous audio heritage, made in America

Since its founding in 1949, McIntosh has defined the meaning of high-quality sound reproduction, while setting industry standards for superior performance and reliability. The company is based in Binghamton, New York, where its high-end components and speakers are still individually handcrafted by a team of skilled experts. This uncompromising dedication to quality has made McIntosh one of the most recognized and respected audio manufacturers in the world.

Product info:

    Features:
    • stereo preamp with built-in digital-to-analog converter (DAC) and digital inputs
    • digital inputs let you connect sources like a computer, disc player, media streamer, or TV and enjoy superior sound
    • 8-channel 32-bit/500kHz DAC used in Quad Balanced mode (4 stacked channels per stereo channel)
    • accepts and plays high-resolution digital audio sources, including PCM, DSD and DXD files
    • asynchronous USB technology for reduced timing jitter and better sound when connecting to a computer
    • fully regulated power supplies and R-Core Power Transformer ensure stable, noise-free operation
    • full-size headphone output
    • remote control
    • fluorescent front-panel display with adjustable brightness
    • fiber optic illuminated glass front panel
    • handcrafted at McIntosh's Binghamton, New York factory
    Connections:
    • variable-level balanced XLR and unbalanced RCA outputs for connecting directly to a power amplifier
    • fixed-level balanced XLR and unbalanced RCA outputs for using the D150 as a DAC and connecting to a preamplifier
    • 2 Toslink optical digital audio inputs — supports files up to 24-bit/192kHz
    • 2 coaxial optical digital audio inputs — supports files up to 24-bit/192kHz
    • USB (Type B) input for connecting a Mac® or Windows® computer (USB driver required for audio playback on Windows computers)
      • supports PCM music files up to 32-bit/384kHz, plus DSD64, DSD128 & DSD256, as well as DXD 352.8kHz & DXD 384kHz
      • USB audio driver required for playback on a Windows PC (free USB driver download available from McIntosh's website)
    • proprietary digital DSD connection for playback of SACD audio when paired with the McIntosh MCT500 SACD/CD Transport
    • 12-volt output for activating an external accessory
    • RS-232 port for automated control systems
    • IR input for connecting an IR receiver
    • data port allows basic remote control of a connected McIntosh source component
    • detachable power cable
    • If connecting to a TV, please make sure you can select "PCM" output in its audio menu — the preamp's DAC cannot decode multichannel Dolby® Digital signals
    Specifications:
    • total harmonic distortion: less than 0.0015%
    • signal-to-noise ratio: greater than 110 dB
    • 17-1/2"W x 3-7/8"H x 16"D
    • weight: 13.5 lbs.

    In stock

    There’s something undeniably magnetic about vintage audio gear. The tactile weight of milled aluminum knobs, the warm glow of dial lamps, and—above all—the rich, analog sound that today’s sterile streaming boxes can’t quite replicate. But time is merciless: capacitors dry out, switches oxidize, and those gorgeous walnut cabinets lose their sheen. That’s where the art (and science) of our vintage audio refurbishment comes in.

    Why Vintage Audio Still Matters

    In the golden era of hi-fi—roughly the mid-1960s through the early 1980s—companies like Marantz, McIntosh, Pioneer, Sansui, and Technics were engaged in an arms race of build quality. This was before cost-cutting plastics and disposable designs; amplifiers were over-engineered, receivers were works of art, and turntables were precision instruments.

    Owning one wasn’t just about sound; it was about status and permanence. These machines were built to last a lifetime—or two. The irony? Decades later, they often do, provided they’re given the care they deserve.

    The Philosophy of Refurbishment

    Refurbishment is not just about fixing; it’s about preserving authenticity while ensuring reliability. The goal is to keep that lush, analog character alive without compromising safety or sound quality.

    Some enthusiasts chase museum-level originality—keeping every factory component in place. Others opt for sympathetic modernization, upgrading parts that never existed in the ’70s to improve performance. Both approaches can be valid; it depends on your vision.

    The Turntable Store refurbishing process.. step by step

    Step 1: The Initial Encounter

    When we first meet a 40-year-old amplifier, we resist the urge to plug it in right away. That dusty Marantz 2270 might look gorgeous, but old electrolytics and brittle insulation can short instantly under full voltage.

    Instead:

    • We inspect for corrosion, burnt resistors, and leaking capacitors.
    • We use a Variac (variable transformer) to bring up voltage slowly, reforming capacitors rather than shocking them back to life.
    • We check fuses—not just for continuity but for correct ratings.

    Tip: A faint musty smell? That’s often the scent of old phenolic boards, not trouble. But a burnt smell? That’s trouble.


    Step 2: Deep Cleaning & Control Detox

    Dust is the enemy of good sound, that is why we clean the interior carefully with compressed air and a soft brush.

    The real magic comes with switches and potentiometers. Over decades, oxidation builds up, causing scratchy controls and dropouts. A deep contact clean in each pot and switch, followed by vigorous cycling, often restores silky-smooth operation.

    Step 3: Electrical Resurrection

    This is where science meets art:

    • Capacitors: Electrolytic caps often need some attention. We replace out-of-spec caps with high-quality modern equivalents (Nichicon, Panasonic), avoiding over-capacitance unless the power supply can handle it.
    • Resistors: Carbon comp resistors drift over decades. Measure and replace out-of-spec parts.
    • Transistors: Certain vintage transistors (e.g., 2SC458) are notorious for noise. We do swap defective ones for modern low-noise equivalents.
    • Relays & Lamps: Speaker relays oxidize; replace or clean contacts. Dial lamps? Upgrade to warm LEDs for a factory glow without the heat.


    Step 4: Cosmetic Glory

    Refinishing the walnut cabinet can transform a unit. We do use real wood oil or Danish oil, not polyurethane. We clean the glass dial carefully; those silkscreened letters are fragile.

    Knobs? We polish with metal cleaner, but never use abrasives on anodized aluminum.

    Faceplate lettering? We avoid harsh chemicals—just mild soap and a microfiber cloth.


    Step 5: Calibration & Sonic Check

    After the repair and cleaning, it’s time to dial in the performance:

    • We do adjust bias and DC offset on amplifiers for stable operation.
    • On turntables, we re-lube bearings, replace belts, and check speed accuracy.
    • On Cassette Decks and Reel to Reels, we replace belts ( if needed ), we clean and demagnetize the heads before the alignment process ( a must ! ) 

    When done right, the result is astonishing: a sound that breathes—liquid mids, velvet highs, and bass with a tactile presence that modern gear rarely matches.


    Our promise for Audiophile-Level Results

    • We Avoid Cheap Parts: That $5 eBay capacitor kit? Hard pass. We use reputable brands.
    • We Don’t Over-Polish: Patina is part of the charm. We aim for “well-loved,” not “plastic surgery.”
    • We Upgrade Discreetly: If we must modernize (like adding gold-plated RCA jacks), we keep it tasteful and reversible.


    Why It’s Worth It

    The payoff isn’t just sonic—it’s emotional. Restoring a 1970s Marantz or Sansui is like bringing a classic car back to life. Every glowing dial lamp, every smooth rotation of a volume knob, connects you to an era when music mattered enough to build machines like this.

    And when you drop the needle on your favorite record and hear that warm, enveloping sound, you’ll know: this wasn’t just a repair. It was a resurrection.

    We have a 14-day return policy, which means you have 14 days after receiving your item to request a return. 

    To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

    To start a return, you can contact us at theturntablestore@gmail.com. Please note that returns will need to be sent to the following address: 

    The Turntable Store
    45 Market Square
    Manheim PA 17545

    If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

    You can always contact us for any return question at theturntablestore@gmail.com.


    Damages and issues
    Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

    Exceptions / non-returnable items
    Certain types of items cannot be returned, like turntable needles and custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. 

    Unfortunately, we cannot accept returns on sale items or gift cards.

    Exchanges
    The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

    European Union 14 day cooling off period
    Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

    Refunds
    We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
    If more than 15 business days have passed since we’ve approved your return, please contact us at theturntablestore@gmail.com.

    View full details

    We strive to provide the best quality customer experience

    We ensure our customers have the best shopping experience

    Fully Serviced

    All items are meticulously serviced and restored to meet factory specifications

    Well Cared Shipping

    We pack with precision and ship in brand new, appropriately sized, boxes.

    Information flow

    Be in the know with timely notifications on your order, starting from acceptance to tracking numbers, allowing you to stay connected with your purchase