Harman Kardon HK 3370 Stereo Receiver – 70 WPC, Phono, Sub Out

Harman Kardon HK 3370 Stereo Receiver – 70 Watts Per Channel with Phono input and Subwoofer Outputs. Thoroughly Tested and Working Well, Very Good Cosmetics, Universal Remote Included

Discover the refined elegance and powerful musicality of the Harman Kardon HK 3370—a luxury stereo receiver from 2000 that exemplifies Harman Kardon’s legendary commitment to sonic purity, minimalist design, and high-current amplification. Thoroughly tested and working perfectly, this receiver combines sophisticated engineering with effortless usability. Includes third-party universal remote for volume control and muting.

Harman Kardon’s High-Current Design Philosophy:
The HK 3370 houses a 2 × 70-watt stereo amplifier with exceptional high-current capability (±42 amps)—a defining characteristic of Harman Kardon’s approach to receiver design. While 70 watts may seem modest by modern standards, the high-current output allows the HK 3370 to drive a wide range of speaker impedances with authority and control, effortlessly handling both efficient and demanding loads.

Users consistently report that the HK 3370 “outpaces low-end Japanese equipment rated at 100 watts,” delivering clean, undistorted sound at all volume levels. One enthusiast noted: “The power at 70 watts easily outpaces any of the low end Japanese equipment. I have been unable to go past the 12 o’clock position without covering my ears.”

Ultrawide-Bandwidth Amplifier:
The amplifier operates across an impressive frequency response of 10Hz to 110kHz—well beyond the human hearing range—with less than 0.07% THD (20Hz-20kHz, both channels driven). This ultrawide bandwidth was a signature Harman Kardon goal, ensuring that any frequency nuances in your program material are reproduced with absolute clarity.

Sophisticated Architecture:
The HK 3370 employs preamp out/main in jacks that can be disconnected via removable jumpers, enabling the receiver to function as:

A complete receiver (phono/tuner preamp + power amp integrated)

A high-quality preamp for use with external power amplifiers

A power amplifier only (when used with an external preamp/processor)

This exceptional flexibility allows audiophiles to upgrade their system incrementally without replacing the entire receiver.

Comprehensive Connectivity:
Phono input (RCA) – High-quality MM phono input for vinyl playback

CD input – Full-range CD input with dedicated RCA jacks

Aux input – Additional line-level input for sources like streaming

Tape Monitor – Record/playback loops for cassette decks or tape processors

Tape 2 – Secondary tape loop for additional recording capability

Subwoofer output – Dedicated preamp output for powered subwoofers (rare for vintage receivers)

Preamp Out/Main In jacks – Removable jumpers allow conversion to preamp-only or power-amp-only use

Speaker outputs – A/B speaker switching (two pairs of speaker terminals)

AM/FM tuner – 30 station presets with RDS (Radio Data System) capability

Control & Usability:
30 AM/FM presets – Store favorite stations for instant recall

Display dimmer – Adjustable brightness for different lighting conditions

Bass and treble controls (±10dB) – Flexible tonal shaping for room acoustics

Balance control – Independent left/right channel volume adjustment

Loudness contour – Compensated listening at lower volumes

Sleep timer – Automatic shutdown after preset duration

A/B speaker switching – Two pairs of speaker terminals

Universal Remote Included:
Included is a third-party universal remote capable of controlling HK 3370 volume and muting—convenient basic control without requiring the original remote.

Specifications:
Type: Stereo Receiver

Power Output: 70W × 2 (8Ω, stereo, FTC rated, <0.07% THD, both channels driven)

High-Current Capability: ±42 amps

Frequency Response: 10Hz – 110kHz (full bandwidth)

Audio Frequency Response: 10Hz – 20kHz (±0dB)

Total Harmonic Distortion: 0.07% (20Hz-20kHz)

Signal-to-Noise Ratio: 95dB (line input)

Input Sensitivity: 200mV (line)

Headphone Output: 6.3mm jack (rated up to 120Ω)

FM Tuner Sensitivity: 1.12µV IHF (13.5dBf)

FM Selectivity: ±400kHz at 65dB

FM Stereo S/N: 72dB (at 1kHz with 100% modulation)

Speaker Load Impedance: 4Ω to 16Ω recommended

Presets: 30 AM/FM stations

Accessories: Two switched AC outlets (100W max each), unswitched outlet

Dimensions: 442 × 156 × 415mm (17.4″ W × 6.1″ H × 16.4″ D)

Weight: 11.2kg (24.6 lbs)

Year: 2000

Why the HK 3370 Remains Valued:
Audio enthusiasts appreciate the HK 3370 for its sonic purity, minimalist design philosophy, and exceptional build quality. Unlike flashy receivers with excessive displays and surround features, the 3370 focuses on what matters: clean, powerful amplification and flexible connectivity. Users report no audible hiss, undistorted sound at all volume levels, and effortless speaker control. One long-term owner summed it up: “If you want inexpensive, quality two-channel sound, it doesn’t get any better at this price.”

The preamp out/main in capability is unusual for vintage receivers—it provides genuine flexibility for upgrading without abandoning the entire component.

Cosmetic Condition:
This unit is in very good cosmetic condition with light signs of age appropriate to a 25-year-old receiver. The brushed aluminum faceplate shows minimal scratches, the display is clear and bright, all controls operate smoothly, and the overall appearance reflects honest vintage character without significant wear or deterioration.

Summary:
The Harman Kardon HK 3370 represents an era when luxury receivers prioritized sonic performance and design elegance over unnecessary features. Thoroughly tested and ready to perform, this unit is ready to become the foundation of a refined stereo system. Whether you’re building a two-channel vinyl playback rig, upgrading from low-end equipment, or seeking a high-quality preamp with integrated amplification, the HK 3370 delivers sophisticated performance.

Purchase with Confidence
Includes Radique Audio “Bumper to Bumper” Warranty

Perpetual Trade-Back Policy—upgrade or swap with peace of mind

Universal Remote included for volume and muting control

A masterpiece of refined engineering and elegant minimalism—thoroughly tested and ready to deliver years of musical enjoyment. Asking $295.