Douk Audio MC5-BX 4-Channel Audio Mixer Review

The Douk Audio MC5-BX is a mini stereo audio mixer priced at $33.29. It offers four groups of 3.5mm inputs and one 3.5mm AUX output, designed to blend signals from CD players, instruments, portable recording devices and video playback devices into a single feed.

The mixer works in two modes. In active mode you connect independent USB power (Type-C, DC 5V at 0.5A or more) and the built-in audio amp chip amplifies the mixed signal for a larger output with a 3-ohm output impedance. In passive mode no power is required at all - the MC5-BX works as pure resistive attenuation with a 50K-ohm input impedance and 4.7K-ohm output impedance, and the output is a little attenuated, which is the trade-off for the cleanest possible signal path.

On the front panel, one main output volume knob joins four independent input volume knobs, so each source level can be set separately with no interference between channels. The metal casing provides better shielding, and the flexible circuit mixes signals without degrading sound quality. Two warm tips from the manufacturer: in active mode, never share a power supply with your audio device or common ground noise will appear, and keep wireless devices such as Wi-Fi routers and phones away from the unit to avoid noise. Also note it only supports standard audio signals such as CD, DVD and phone sources - phono turntables and microphones cannot connect directly.

Specifications

How it compares

The MC5-BX is the cheaper of the group's two mixers at $33.29. The Douk Audio MX5 costs $64.99, which is $31.70 more, and its page lists more: 4 input groups of 6.35mm / 3.5mm jacks and one 6.35mm / 3.5mm output, a mono/stereo switch on each channel, a 16-bit dual-color LED level meter and support for 16-200Ω headphones. The MC5-BX page lists 3.5mm jacks only, no meter and no headphone figure, but it has a passive mode that needs no power at all, with an input impedance of 50kΩ (the MX5 page also lists 50kΩ) and a 4.7kΩ output impedance. Both want DC 5V at 0.5A or more for powered use and list a Type-C USB cable but no adapter in the box. The MC5-BX also has the smaller footprint, at 108 x 59mm (25mm high, without knobs) and 206g, against 132 x 86mm (24mm high) and 350g.

For scale, the Douk Audio EQ5 Mini is a similar pocket size (120 x 60 x 38mm, 224g) with 3.5mm AUX in and out and the same 5V supply need, but at $64.99 it shapes tone with five bands instead of blending sources. Who it suits: the MC5-BX fits a small desk or a field kit that has to blend a few 3.5mm sources on a tight budget, ideally in passive mode with no power lead. Choose the MX5 for 6.35mm sources, per-channel mono/stereo and a meter. Skip the MC5-BX if you need published noise or input-level figures: its page gives neither.

Shipping, returns and warranty

• Shipping: Douk Audio's current shipping page says orders are generally processed no later than the next business day and arrive in 2-8 business days, with duties, taxes and customs fees included in the checkout price unless noted otherwise.
• Older shipping terms are still online: airmail at 10-25 days for parcels under 2 kg, DHL, UPS or FedEx at 5-8 days above that, and a line saying the store is not responsible for import duties. Check the delivery estimate and any duties at checkout.
• Returns: ask within 30 days of delivery and wait for approval before sending anything; an approved return has to ship within 7 days. Items need all packaging and accessories and no excessive wear, or the store can refuse them or refund part of the price. Refunds go to the original payment method after inspection.
• Not refunded: original and expedited shipping, duties, taxes and customs charges, unless the law requires it or the store made the error. The return page does not say who pays return postage, and the older refund page excludes mistaken orders and change-of-mind returns from free after-sale service.
• Warranty: 24 months from purchase for manufacturing defects, with free repair, a replacement unit and free shipping both ways for covered repairs. Drops, liquid, DIY repairs, lightning, extreme temperatures and misuse are excluded (partial fees may apply), and damage from weak packing on the way back may not be covered. The older refund page still says 1 year.
• Seller: the site is run by Shenzhen Anba Technology Co., Ltd (Shenzhen, China) and HONGKONG LONGSHENG Import and Export Trading Co., Limited (Hong Kong); support is by email at [email protected]. These terms cover orders placed on doukaudio.com; other sellers apply their own.

For this product, the page lists shipping to US, UK, EU, AU and Other (the Other option is priced $6.70 higher) and shows Free Shipping, 2-8 Days Arrival, 30-Day Return and 2-Year Warranty badges near the price.