Sennheiser HD 650 wired open-back headphones

Name: Wired open-back headphones Sennheiser HD 508825
Brand: Sennheiser
SKU: 3062188
Price: 305.99 EUR
Availability: InStock

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Wired open-back headphones Sennheiser HD 650 — 300 Ω impedance, 10–41,000 Hz, 3 m cable, 6.35 mm adapter

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Short description

Sennheiser HD 650 are wired, open-back around-the-ear headphones for audiophile use. They feature a 300 Ω impedance, frequency response 10–41,000 Hz, 102 dB sensitivity, 0.05% THD and neodymium dynamic transducers. Supplied with a 3 m cable and 6.35 mm adapter, they are intended for high-quality critical listening with compatible amplifiers and DACs.

Available at price 305.99 €: 5 pcs.

Total available for order: 29 pcs.

Warranty: 2 Years

SKU: 3062188

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

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From 4.99 € (Weight: 0.59 kg)

Parcel couriers

Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts nodaļa

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From 1.99 €

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Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment

36 months installment: from 8.50 euros per month

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Product information

Description

The Sennheiser HD 650 are open-back, over-ear wired headphones designed for audiophiles seeking accurate, natural sound reproduction. Built on the experience of the HD 600, these headphones use optimised magnet and diaphragm systems, low-mass aluminium voice coils and a refined damping element to deliver detailed transient response, low distortion and a balanced tonal character across a wide frequency range (10–39,500 Hz). The detachable, highly conductive OFC cable and comfortable headband with soft ear pads support extended listening sessions.

Advantages

Systems are selected with narrow tolerances (±1 dB) and matched in pairs to ensure consistent channel balance. The magnet system is optimised to minimise harmonic and intermodulation distortion, while the lightweight aluminium voice coils improve transient response. A specially developed damping element made from fine acoustic metal mesh provides even damping across the diaphragm surface and remains stable across climates. The detachable cable is made from highly conductive OFC copper with low handling noise, and the connectors include a gold-plated 6.35 mm jack plug with a 3.5 mm adapter. The headphones feature a high-quality titanium/silver finish and are built for precise, lifelike sound reproduction.

Suitable for

Critical listening and mastering
Audiophile home listening
Reference playback in a studio environment
Long-duration listening sessions

Key specifications

Frequency response: 10–39,500 Hz
Impedance: 300 Ω
Sound pressure level (SPL): 103 dB
Total harmonic distortion: 0.05%
Connector: gold-plated 6.35 mm jack with 3.5 mm adapter
Cable length: 3 m (detachable, OFC copper)
Ear coupling: Circumaural (over-ear)
Wearing style: Head-band
Colour: Grey, Black

How to use

Connect the detachable cable to the left earcup and plug the jack into your audio source using the supplied 6.35 mm plug or the 3.5 mm adapter. Position the headband so the ear pads fully enclose the ears for optimal seal and comfort. For best results, allow a brief break-in period for the transducers and use a high-quality headphone amplifier or source with sufficient output for a 300 Ω load.

Usage recommendations

Use a dedicated headphone amplifier or a high-output source to drive the 300 Ω impedance properly. Store the headphones in a dry place and avoid exposing the ear pads and cable to excessive heat or moisture. Replace the detachable cable or pads with manufacturer-approved parts to preserve sound characteristics and fit.

Specifications

Ear coupling:: Circumaural
Connectivity technology:: Wired
Cable length:: 3 m
Weight:: 260 kg
Wearing style:: Head-band
Product colour:: Grey, Black

All features

Headphones

Headphone frequency:: 10 - 41000
Impedance:: 300 Ω
Ear coupling:: Circumaural
Acoustic system:: Open
Driver type:: Dynamic

Ports & interfaces

Connectivity technology:: Wired
Bluetooth:: No
Connector contacts plating:: Gold
USB connectivity:: No
3.5 mm connector:: No
2.5 mm connector:: No
6.35 mm connector:: Yes
RF connectivity:: No

Performance

Cable length:: 3 m
Product colour:: Grey, Black
Total Harmonic Distortion (THD):: 0.05 %
Volume control:: No
Wearing style:: Head-band
Sound pressure level (max):: 103 dB
Recommended usage:: Music
Product type:: Headphones

Microphone

Noise-canceling:: No
Microphone type:: Not available

Design

Foldable:: No

Weight & dimensions

Weight:: 260 kg

Packaging data

Package depth:: 255 mm
Package height:: 315 mm
Package width:: 106 mm

Logistics data

Master (outer) case height:: 330 mm
Master (outer) case width:: 330 mm
Master (outer) case gross weight:: 10706.64 g
Master (outer) case length:: 525 mm
Products per master (outer) case:: 6 pc(s)
Shipping (inner) case gross weight:: 1654.44 g
Products per shipping (inner) case:: 1 pc(s)

Supplier features

Country of origin:: Ireland

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Warehouse	Stock	Delivery to the store	Store Price
WH155	5	01.07.2026	305.99 € Best price
EU2	1	Thursday Best delivery	383.99 €
WH353	1	03.07.2026	407.99 €
EU57	1	30.06.2026	408.99 €
WH334	10	01.07.2026	444.49 €

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Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
WH109	1	15.07.2026	Is Used 388.99 €
WH109	10	15.07.2026	456.99 €

305.99 €

Stock: 5

Delivery Date: 01.07.2026

Warehouse: WH155

383.99 €

Stock: 1

Delivery Date: Thursday Best delivery

Warehouse: EU2

407.99 €

Stock: 1

Delivery Date: 03.07.2026

Warehouse: WH353

408.99 €

Stock: 1

Delivery Date: 30.06.2026

Warehouse: EU57

444.49 €

Stock: 10

Delivery Date: 01.07.2026

Warehouse: WH334

Available only for legal entities

Is Used

388.99 €

Stock: 1

Delivery Date: 15.07.2026

Warehouse: WH109

456.99 €

Stock: 10

Delivery Date: 15.07.2026

Warehouse: WH109

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Customer questions

FAQ

How much does the Sennheiser HD 650 wired open-back headphones cost, and is it available for purchase?

The price is 305.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can Sennheiser HD 650 wired open-back headphones be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Sennheiser HD 650 wired open-back headphones online, and the application process is as simple as possible:

Select the product on the website and add it to your cart;
When placing your order, choose the payment method “Installments”;
Fill in the required details for the lending partner;
Receive a decision within a few minutes.

For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Sennheiser products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Sennheiser service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ear coupling, connectivity technology, cable length, weight, wearing style, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

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