Compare detailed specifications, side-by-side differences, verified user reviews, and buying recommendations to help you make the right choice.
Deciding between the Pyle PT684BT and the Harman Kardon HK 3700 depends on your available space, storage capacity goals, and everyday usage style:
Designed for large households, bulk grocery shoppers, and long-term storage where total cubic feet is the highest priority.
Ideal for apartments, offices, dorms, or secondary kitchen use where space efficiency and neat organization are paramount.
| Specification | Pyle PT684BT | Harman Kardon HK 3700 |
|---|---|---|
| Amplifier | ||
| Output Impedance Per Channel | 4 Ohm, 6 Ohm, 8 Ohm | 8 Ohm |
| Output Power Per Channel | 120 W | 85 W |
| Total Output Power | 720 W | 190 W |
| Total Harmonic Distortion | 0.5 % | 0.07 % |
| Frequency Response | 20 Hz-20 kHz | 20 Hz-20 kHz |
| Sound Features | ||
| Surround System Class | 5.1 channel | 2.0 channel |
| Surround Sound Effects | Dolby Surround | has not |
| Audio D/A Converter | 32bit / 192kHz | 24bit / 192kHz |
| Digital Content Protection | has not | — |
| Audio Formats | ||
| Apple Lossless | Yes | Yes |
| AIFF | No | No |
| AAC | No | Yes |
| WMA | Yes | Yes |
| WAV | Yes | Yes |
| MP3 | Yes | Yes |
| FLAC | Yes | Yes |
| Built-in Decoders | ||
| Dolby Surround | Yes | No |
| Dolby Digital Plus | Yes | No |
| Dolby Atmos | Yes | No |
| DTS:X | No | No |
| Dolby True HD | Yes | No |
| Signal Processing | ||
| HDMI Pass-through | up to 4K | No |
| Upscaling Via HDMI | Yes | No |
| 3D Pass-through | Yes | No |
| Video Conversion/scaling | Yes | No |
| Connector Type | ||
| HDMI Outputs | 1 | has not |
| HDMI Inputs | 2 | has not |
| Coaxial Digital Inputs | 1 | 1 |
| Optical Digital Inputs | 1 | 2 |
| Phones | 1 | 1 |
| AV Inputs | has not | — |
| USB | 1 | 1 |
| Subwoofer Outputs | 1 | 1 |
| Coaxial Digital Outputs | has not | has not |
| Optical Digital Outputs | has not | has not |
| Media Content Source | ||
| USB-host | Yes | Yes |
| Network | No | Yes |
| Bluetooth | Yes | No |
| Additional Features | ||
| Audio Return Channel (ARC) | Yes | No |
| Apple Air-play Support | No | No |
| Advanced Sound Retriever (ASR) Technology | — | No |
| Smartphone Remote Control | Yes | No |
| Three-zone Capability | No | No |
| A-B Speaker Switch | Yes | Yes |
| Dual-zone Capability | — | No |
| Pure Direct Mode | Yes | No |
| Auto Power Off | Yes | Yes |
| Bi-amplifying | Yes | Yes |
| Connectivity Interfaces | ||
| IEEE 802.3u | No | No |
| IEEE 802.3 | No | No |
| WI-FI | No | No |
| Bluetooth | Yes | No |
| Dimensions | ||
| Dimensions | 16.9 x 15 x 5.7 inches | 21.1 x 15.4 x 8.5 inches |
| Functions | ||
| Network Audio Player | No | No |
| Internet Radio | No | Yes |
| Digital Player | Yes | Yes |
| Power Device | ||
| Standby Power Consumption | 0.3 W | 0.5 W |
| Operational Power Consumption | 600 W | 310 W |
| Clock | ||
| Sleep Timer | Yes | Yes |
| Built-in Clock | Yes | Yes |
| Built-in Display | ||
| Colour | black | black |
| Type | fluorescent | fluorescent |
| Radio | ||
| Preset Station | 12 | 40 |
| Tuner Bands | AM/FM | AM/FM |
| Tuner Type | digital | digital |
| General | ||
| Brand | Pyle | Harman Kardon |
The main differences center around storage capacity, form factor, and convenience. The Pyle PT684BT provides extensive bulk storage capacity best suited for homes, garages, or basements needing deep freeze space. In contrast, the Harman Kardon HK 3700 offers a compact upright design that fits into smaller spaces with convenient shelf organization.
Chest-style freezers generally excel in thermal efficiency because cold air naturally settles at the bottom and does not escape when the lid is lifted. Compact upright models have lower total kilowatt-hour usage simply due to their smaller cubic volume, making both designs efficient for their respective intended purposes.
Both products are available through official brand stores and authorized retailers with full manufacturer warranties and fast delivery options. Click the "Check Best Price" buttons in the comparison cards above to view today's latest promotions, official deals, and current availability.
Measure your available floor clearance first. If you have open space in a garage, basement, or utility room and want to freeze items in bulk, choose the Pyle PT684BT. If you have limited room in a kitchen, apartment, dorm, or office and prefer easy eye-level access to items, choose the Harman Kardon HK 3700.