• ddHiFi TC28Max USB-C OTG adapter in silver with USB OTG and 60W ports
  • ddHiFi TC28Max USB OTG adapter with PD input
  • ddHiFi TC28Max linking a phone, a DAC/amp and a power bank
  • ddHiFi TC28Max CNC aluminum housing with snap-fit cover
  • ddHiFi TC28Max held in hand, with its specifications
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ddHiFi

ddHiFi TC28Max USB-C OTG Adapter — 60W PD Charging, Dual USB-C, Aluminum

ddHiFi TC28Max USB-C OTG Adapter — 60W PD Charging, Dual USB-C, Aluminum
  • Genuine & Brand-New
  • Free Shipping · Ships from China
  • 1-Year Warranty
  • 45-Day Returns
$37.99 USD
$37.99 USD
Shipping calculated at checkout.

The ddHiFi TC28Max is a USB-C OTG adapter that splits one phone port into a USB OTG port for a DAC/amp and a charging port that accepts up to 60W USB PD, in a 7.8g aluminum body. It suits phone listeners who run a USB DAC dongle for long sessions and want to charge at the same time.

Who the ddHiFi TC28Max is for

  • Long listening sessions: The charging port accepts up to 60W USB PD input, so your phone can charge while a USB DAC/amp stays connected to the OTG port.
  • Power-bank rigs: ddHiFi designed it to link a phone, a DAC/amp and a power bank, charging the phone while also supplying stable power to the DAC/amp.
  • TC28C Pro owners: ddHiFi raised the maximum charging power from 10W on the TC28C Pro to 60W on the TC28Max.
  • Everyday carry: The CNC-machined aluminum body measures 23.8 × 17 × 9.5mm without the plug and weighs about 7.8g.
  • Skip it if: You need a DAC or a Lightning plug: the TC28Max is a USB-C adapter for a separate USB DAC/amp, and ddHiFi notes compatibility may vary with some Android phone models.

ddHiFi TC28Max key specs

  • Plug: USB-C (male)
  • Ports: 2 × USB-C (female): one USB OTG port, one 60W charging port
  • Max charging power: 60W at the charging port (USB PD)
  • Supported devices (OTG port): Audio decoding devices such as USB DACs and DAC/amps
  • Protocol: USB PD3.1, with 3 sets of 6-channel DRP USB-C and PD communication modules
  • Protection: Over-temperature, current-limiting and short-circuit protection; AOS MOS switching for up to 10A
  • Build: CNC-machined aluminum housing with screw-free snap-fit covers; 4-layer immersion gold PCB
  • Port durability: USB-C female port rated for 10,000 insertion cycles
  • Dimensions: 23.8 × 17 × 9.5mm (excluding the plug)
  • Weight: About 7.8g

Genuine ddHiFi stock. Free shipping on every order, 45-day returns.

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Good to know

Buying from TonePier

Is this unit genuine?

Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.

Where does my order ship from, and how long does it take?

Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.

What if it isn't for me?

You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.